Tweak XML comments on BrotliStream and ZLibStream (#73179)

src/libraries/System.IO.Compression.Brotli/src/System/IO/Compression/BrotliStream.cs

@@ -18,12 +18,13 @@ public sealed partial class BrotliStream : Stream
         private readonly CompressionMode _mode;
 
         /// <summary>Initializes a new instance of the <see cref="System.IO.Compression.BrotliStream" /> class by using the specified stream and compression mode.</summary>
-        /// <param name="stream">The stream to compress.</param>
-        /// <param name="mode">One of the enumeration values that indicates whether to compress or decompress the stream.</param>
+        /// <param name="stream">The stream to which compressed data is written or from which data to decompress is read.</param>
+        /// <param name="mode">One of the enumeration values that indicates whether to compress data to the stream or decompress data from the stream.</param>
         public BrotliStream(Stream stream, CompressionMode mode) : this(stream, mode, leaveOpen: false) { }
+
         /// <summary>Initializes a new instance of the <see cref="System.IO.Compression.BrotliStream" /> class by using the specified stream and compression mode, and optionally leaves the stream open.</summary>
-        /// <param name="stream">The stream to compress.</param>
-        /// <param name="mode">One of the enumeration values that indicates whether to compress or decompress the stream.</param>
+        /// <param name="stream">The stream to which compressed data is written or from which data to decompress is read.</param>
+        /// <param name="mode">One of the enumeration values that indicates whether to compress data to the stream or decompress data from the stream.</param>
         /// <param name="leaveOpen"><see langword="true" /> to leave the stream open after the <see cref="System.IO.Compression.BrotliStream" /> object is disposed; otherwise, <see langword="false" />.</param>
         public BrotliStream(Stream stream, CompressionMode mode, bool leaveOpen)
         {

src/libraries/System.IO.Compression.Brotli/src/System/IO/Compression/enc/BrotliStream.Compress.cs

@@ -14,13 +14,13 @@ public sealed partial class BrotliStream : Stream
         private BrotliEncoder _encoder;
 
         /// <summary>Initializes a new instance of the <see cref="System.IO.Compression.BrotliStream" /> class by using the specified stream and compression level.</summary>
-        /// <param name="stream">The stream to compress.</param>
-        /// <param name="compressionLevel">One of the enumeration values that indicates whether to emphasize speed or compression efficiency when compressing the stream.</param>
+        /// <param name="stream">The stream to which compressed data is written.</param>
+        /// <param name="compressionLevel">One of the enumeration values that indicates whether to emphasize speed or compression efficiency when compressing data to the stream.</param>
         public BrotliStream(Stream stream, CompressionLevel compressionLevel) : this(stream, compressionLevel, leaveOpen: false) { }
 
         /// <summary>Initializes a new instance of the <see cref="System.IO.Compression.BrotliStream" /> class by using the specified stream and compression level, and optionally leaves the stream open.</summary>
-        /// <param name="stream">The stream to compress.</param>
-        /// <param name="compressionLevel">One of the enumeration values that indicates whether to emphasize speed or compression efficiency when compressing the stream.</param>
+        /// <param name="stream">The stream to which compressed data is written.</param>
+        /// <param name="compressionLevel">One of the enumeration values that indicates whether to emphasize speed or compression efficiency when compressing data to the stream.</param>
         /// <param name="leaveOpen"><see langword="true" /> to leave the stream open after disposing the <see cref="System.IO.Compression.BrotliStream" /> object; otherwise, <see langword="false" />.</param>
         public BrotliStream(Stream stream, CompressionLevel compressionLevel, bool leaveOpen) : this(stream, CompressionMode.Compress, leaveOpen)
         {

src/libraries/System.IO.Compression/src/System/IO/Compression/ZLibStream.cs

@@ -14,15 +14,15 @@ public sealed class ZLibStream : Stream
         private DeflateStream _deflateStream;
 
         /// <summary>Initializes a new instance of the <see cref="ZLibStream"/> class by using the specified stream and compression mode.</summary>
-        /// <param name="stream">The stream to which compressed data is written or from which decompressed data is read.</param>
-        /// <param name="mode">One of the enumeration values that indicates whether to compress or decompress the stream.</param>
+        /// <param name="stream">The stream to which compressed data is written or from which data to decompress is read.</param>
+        /// <param name="mode">One of the enumeration values that indicates whether to compress data to the stream or decompress data from the stream.</param>
         public ZLibStream(Stream stream, CompressionMode mode) : this(stream, mode, leaveOpen: false)
         {
         }
 
         /// <summary>Initializes a new instance of the <see cref="ZLibStream"/> class by using the specified stream, compression mode, and whether to leave the <paramref name="stream"/> open.</summary>
-        /// <param name="stream">The stream to which compressed data is written or from which decompressed data is read.</param>
-        /// <param name="mode">One of the enumeration values that indicates whether to compress or decompress the stream.</param>
+        /// <param name="stream">The stream to which compressed data is written or from which data to decompress is read.</param>
+        /// <param name="mode">One of the enumeration values that indicates whether to compress data to the stream or decompress data from the stream.</param>
         /// <param name="leaveOpen"><see langword="true" /> to leave the stream object open after disposing the <see cref="ZLibStream"/> object; otherwise, <see langword="false" />.</param>
         public ZLibStream(Stream stream, CompressionMode mode, bool leaveOpen)
         {
@@ -31,14 +31,14 @@ public ZLibStream(Stream stream, CompressionMode mode, bool leaveOpen)
 
         /// <summary>Initializes a new instance of the <see cref="ZLibStream"/> class by using the specified stream and compression level.</summary>
         /// <param name="stream">The stream to which compressed data is written.</param>
-        /// <param name="compressionLevel">One of the enumeration values that indicates whether to emphasize speed or compression efficiency when compressing the stream.</param>
+        /// <param name="compressionLevel">One of the enumeration values that indicates whether to emphasize speed or compression efficiency when compressing data to the stream.</param>
         public ZLibStream(Stream stream, CompressionLevel compressionLevel) : this(stream, compressionLevel, leaveOpen: false)
         {
         }
 
         /// <summary>Initializes a new instance of the <see cref="ZLibStream"/> class by using the specified stream, compression level, and whether to leave the <paramref name="stream"/> open.</summary>
         /// <param name="stream">The stream to which compressed data is written.</param>
-        /// <param name="compressionLevel">One of the enumeration values that indicates whether to emphasize speed or compression efficiency when compressing the stream.</param>
+        /// <param name="compressionLevel">One of the enumeration values that indicates whether to emphasize speed or compression efficiency when compressing data to the stream.</param>
         /// <param name="leaveOpen"><see langword="true" /> to leave the stream object open after disposing the <see cref="ZLibStream"/> object; otherwise, <see langword="false" />.</param>
         public ZLibStream(Stream stream, CompressionLevel compressionLevel, bool leaveOpen)
         {