diff --git a/README.md b/README.md
index 37a2148..3e5c5da 100644
--- a/README.md
+++ b/README.md
@@ -112,10 +112,10 @@ Layers in GeoJSON files (containing a FeatureCollection) can be represented by a
 
 ```bash
 # mvt -h
-OVERVIEW: A utility for inspecting and working with vector tiles and GeoJSON files.
+OVERVIEW: A utility for inspecting and working with vector tiles (MVT) and GeoJSON files.
 
-The tile coordinate of vector tiles can be extracted from the path
-if it's either in the form '/z/x/y' or 'z_x_y'.
+A x/y/z tile coordinate is needed for encoding/decoding vector tiles (MVT).
+This tile coordinate can be extracted from the file path/URL if it's either in the form '/z/x/y' or 'z_x_y'.
 Tile coordinates are not necessary for GeoJSON input files.
 
 Examples:
diff --git a/Sources/MVTCLI/CLI.swift b/Sources/MVTCLI/CLI.swift
index a9f40c4..f75d955 100644
--- a/Sources/MVTCLI/CLI.swift
+++ b/Sources/MVTCLI/CLI.swift
@@ -10,11 +10,11 @@ struct CLI: AsyncParsableCommand {
 
     static let configuration = CommandConfiguration(
         commandName: "mvt",
-        abstract: "A utility for inspecting and working with vector tiles and GeoJSON files.",
+        abstract: "A utility for inspecting and working with vector tiles (MVT) and GeoJSON files.",
         discussion: """
-        The tile coordinate of vector tiles can be extracted from the path
-        if it's either in the form '/z/x/y' or 'z_x_y'.
-        Tile coordinates are not necessary for GeoJSON input files.
+        A x/y/z tile coordinate is needed for encoding/decoding vector tiles (MVT).
+        This tile coordinate can be extracted from the path/URL if it's either in the form '/z/x/y' or 'z_x_y'.
+        Tile coordinates are not necessary for GeoJSON files.
 
         Examples:
         - Tests/MVTToolsTests/TestData/14_8716_8015.vector.mvt
diff --git a/Sources/MVTCLI/Dump.swift b/Sources/MVTCLI/Dump.swift
index ea99fc3..36d1b25 100644
--- a/Sources/MVTCLI/Dump.swift
+++ b/Sources/MVTCLI/Dump.swift
@@ -14,7 +14,10 @@ extension CLI {
         @Option(name: [.customShort("P"), .long], help: "Feature property to use for the layer name in input and output GeoJSONs.")
         var propertyName: String = VectorTile.defaultLayerPropertyName
 
-        @Flag(name: [.customShort("D"), .long], help: "Don't add the layer name as a property to Features in the output GeoJSONs.")
+        @Flag(name: [.customLong("Di", withSingleDash: true), .long], help: "Don't parse the layer name (option 'property-name') from Feature properties in the input GeoJSONs. Might speed up GeoJSON parsing considerably.")
+        var disableInputLayerProperty: Bool = false
+
+        @Flag(name: [.customLong("Do", withSingleDash: true), .long], help: "Don't add the layer name (option 'property-name') as a Feature property in the output GeoJSONs.")
         var disableOutputLayerProperty: Bool = false
 
         @OptionGroup
@@ -34,8 +37,8 @@ extension CLI {
 
             var tile = VectorTile(
                 contentsOfGeoJson: url,
-                layerProperty: propertyName,
-                layerWhitelist: layerAllowlist,
+                layerProperty: disableInputLayerProperty ? nil : propertyName,
+                layerWhitelist: disableInputLayerProperty ? nil : layerAllowlist,
                 logger: options.verbose ? CLI.logger : nil)
 
             if tile == nil,
diff --git a/Sources/MVTCLI/Export.swift b/Sources/MVTCLI/Export.swift
index b86cf43..c925a20 100644
--- a/Sources/MVTCLI/Export.swift
+++ b/Sources/MVTCLI/Export.swift
@@ -20,7 +20,7 @@ extension CLI {
         @Option(name: [.customShort("P"), .long], help: "Feature property to use for the layer name in the output GeoJSON.")
         var propertyName: String = VectorTile.defaultLayerPropertyName
 
-        @Flag(name: [.customShort("D"), .long], help: "Don't add the layer name as a property to Features in the output GeoJSON.")
+        @Flag(name: [.customLong("Do", withSingleDash: true), .long], help: "Don't add the layer name (option 'property-name') as a Feature property in the output GeoJSONs.")
         var disableOutputLayerProperty: Bool = false
 
         @Flag(name: .shortAndLong, help: "Pretty-print the output GeoJSON.")
diff --git a/Sources/MVTCLI/Import.swift b/Sources/MVTCLI/Import.swift
index 6ecb5e4..27abb89 100644
--- a/Sources/MVTCLI/Import.swift
+++ b/Sources/MVTCLI/Import.swift
@@ -24,7 +24,7 @@ extension CLI {
         @Option(name: [.customShort("P"), .long], help: "Feature property to use for the layer name in input GeoJSONs. Fallback to 'layer-name' or a default if the property is not present.")
         var propertyName: String = VectorTile.defaultLayerPropertyName
 
-        @Flag(name: [.customShort("D"), .long], help: "Don't try to find 'propert-name' in input GeoJSONs, just use 'layer-name' or a default. Might speed up things considerably.")
+        @Flag(name: [.customLong("Di", withSingleDash: true), .long], help: "Don't parse the layer name (option 'property-name') from Feature properties in the input GeoJSONs, just use 'layer-name' or a default. Might speed up GeoJSON parsing considerably.")
         var disableInputLayerProperty: Bool = false
 
         @OptionGroup
diff --git a/Sources/MVTCLI/Info.swift b/Sources/MVTCLI/Info.swift
index 7892671..fc2be14 100644
--- a/Sources/MVTCLI/Info.swift
+++ b/Sources/MVTCLI/Info.swift
@@ -11,7 +11,15 @@ extension CLI {
             case properties
         }
 
-        static let configuration = CommandConfiguration(abstract: "Print information about the input file (MVT or GeoJSON)")
+        static let configuration = CommandConfiguration(
+            abstract: "Print information about the input file (MVT or GeoJSON)",
+            discussion: """
+            Available tables:
+            - features: Feature counts (points, linestrings, polygons) for each layer
+                        in the input file.
+            - properties: Counts of all Feature properties for each layer in the
+                          input file.
+            """)
 
         @Option(name: .shortAndLong,
                 help: "The tables to print, comma separated list of '\(InfoTables.allCases.map(\.rawValue).joined(separator: ","))'.",
diff --git a/Sources/MVTCLI/Merge.swift b/Sources/MVTCLI/Merge.swift
index 4355642..3bedef0 100644
--- a/Sources/MVTCLI/Merge.swift
+++ b/Sources/MVTCLI/Merge.swift
@@ -14,7 +14,7 @@ extension CLI {
 
         static let configuration = CommandConfiguration(
             abstract: "Merge any number of MVTs or GeoJSONs",
-            discussion: "Vector tiles should all have the same tile coordinate, or you will get strange results.")
+            discussion: "Note: Vector tiles should all have the same tile coordinate or strange things will happen.")
 
         @Option(name: [.short, .customLong("output")], help: "Output file (optional, default is console).")
         var outputFile: String?
@@ -22,19 +22,22 @@ extension CLI {
         @Option(name: [.customShort("O"), .long], help: "Output file format (optional, one of 'auto', 'geojson', 'mvt').")
         var outputFormat: OutputFormat = .auto
 
-        @Flag(name: .shortAndLong, help: "Force overwrite an existing --output file.")
+        @Flag(name: .shortAndLong, help: "Force overwrite an existing 'output' file.")
         var forceOverwrite = false
 
-        @Flag(name: .shortAndLong, help: "Append to an existing --output file.")
+        @Flag(name: .shortAndLong, help: "Append to an existing 'output' file.")
         var append = false
 
         @Option(name: .shortAndLong, help: "Merge only the specified layers (can be repeated).")
         var layer: [String] = []
 
-        @Option(name: [.customShort("P"), .long], help: "Feature property to use for the layer name in the output GeoJSON.")
+        @Option(name: [.customShort("P"), .long], help: "Feature property to use for the layer name in input and output GeoJSONs.")
         var propertyName: String = VectorTile.defaultLayerPropertyName
 
-        @Flag(name: [.customShort("D"), .long], help: "Don't add the layer name as a property to Features in the output GeoJSON.")
+        @Flag(name: [.customLong("Di", withSingleDash: true), .long], help: "Don't parse the layer name (option 'property-name') from Feature properties in the input GeoJSONs. Might speed up GeoJSON parsing considerably.")
+        var disableInputLayerProperty: Bool = false
+
+        @Flag(name: [.customLong("Do", withSingleDash: true), .long], help: "Don't add the layer name (option 'property-name') as a Feature property in the output GeoJSONs.")
         var disableOutputLayerProperty: Bool = false
 
         @Flag(name: .shortAndLong, help: "Pretty-print the output GeoJSON.")
@@ -101,7 +104,7 @@ extension CLI {
                 }
                 else if let geoJsonTile = VectorTile(
                     contentsOfGeoJson: outputUrl,
-                    layerProperty: propertyName,
+                    layerProperty: disableInputLayerProperty ? nil : propertyName,
                     logger: options.verbose ? CLI.logger : nil)
                 {
                     tile = geoJsonTile
@@ -180,8 +183,8 @@ extension CLI {
                 }
                 else if let other = VectorTile(
                     contentsOfGeoJson: otherUrl,
-                    layerProperty: propertyName,
-                    layerWhitelist: layerAllowlist,
+                    layerProperty: disableInputLayerProperty ? nil : propertyName,
+                    layerWhitelist: disableInputLayerProperty ? nil : layerAllowlist,
                     logger: options.verbose ? CLI.logger : nil)
                 {
                     otherTile = other
diff --git a/Sources/MVTCLI/Query.swift b/Sources/MVTCLI/Query.swift
index a837254..139bb32 100644
--- a/Sources/MVTCLI/Query.swift
+++ b/Sources/MVTCLI/Query.swift
@@ -21,10 +21,13 @@ extension CLI {
         @Option(name: .shortAndLong, help: "Search only in this layer (can be repeated).")
         var layer: [String] = []
 
-        @Option(name: [.customShort("P"), .long], help: "Feature property to use for the layer name in the output GeoJSON.")
+        @Option(name: [.customShort("P"), .long], help: "Feature property to use for the layer name in input and output GeoJSONs.")
         var propertyName: String = VectorTile.defaultLayerPropertyName
 
-        @Flag(name: [.customShort("D"), .long], help: "Don't add the layer name as a property to Features in the output GeoJSON.")
+        @Flag(name: [.customLong("Di", withSingleDash: true), .long], help: "Don't parse the layer name (option 'property-name') from Feature properties in the input GeoJSONs. Might speed up GeoJSON parsing considerably.")
+        var disableInputLayerProperty: Bool = false
+
+        @Flag(name: [.customLong("Do", withSingleDash: true), .long], help: "Don't add the layer name (option 'property-name') as a Feature property in the output GeoJSONs.")
         var disableOutputLayerProperty: Bool = false
 
         @Flag(name: .shortAndLong, help: "Pretty-print the output GeoJSON.")
@@ -79,8 +82,8 @@ extension CLI {
 
             var tile = VectorTile(
                 contentsOfGeoJson: url,
-                layerProperty: propertyName,
-                layerWhitelist: layerAllowlist,
+                layerProperty: disableInputLayerProperty ? nil : propertyName,
+                layerWhitelist: disableInputLayerProperty ? nil : layerAllowlist,
                 logger: options.verbose ? CLI.logger : nil)
 
             if tile == nil,