s/chunk/frame/

contrib/seekable_format/zstd_seekable_compression_format.md

@@ -18,7 +18,7 @@ Distribution of this document is unlimited.
 
 ## Introduction
 This document defines a format for compressed data to be stored so that subranges of the data can be efficiently decompressed without requiring the entire document to be decompressed.
-This is done by splitting up the input data into chunks,
+This is done by splitting up the input data into frames,
 each of which are compressed independently,
 and so can be decompressed independently.
 Decompression then takes advantage of a provided 'seek table', which allows the decompressor to immediately jump to the desired data.  This is done in a way that is compatible with the original Zstandard format by placing the seek table in a Zstandard skippable frame.
@@ -31,7 +31,7 @@ In this document:
 
 ## Format
 
-The format consists of a number of chunks (Zstandard compressed frames and skippable frames), followed by a final skippable frame at the end containing the seek table.
+The format consists of a number of frames (Zstandard compressed frames and skippable frames), followed by a final skippable frame at the end containing the seek table.
 
 ### Seek Table Format
 The structure of the seek table frame is as follows:
@@ -58,7 +58,7 @@ This is for compatibility with [Zstandard skippable frames].
 #### `Seek_Table_Footer`
 The seek table footer format is as follows:
 
-|`Number_Of_Chunks`|`Seek_Table_Descriptor`|`Seekable_Magic_Number`|
+|`Number_Of_Frames`|`Seek_Table_Descriptor`|`Seekable_Magic_Number`|
 |------------------|-----------------------|-----------------------|
 | 4 bytes          | 1 byte                | 4 bytes               |
 
@@ -68,9 +68,9 @@ Value : 0x8F92EAB1.
 This value must be the last bytes present in the compressed file so that decoders
 can efficiently find it and determine if there is an actual seek table present.
 
-__`Number_Of_Chunks`__
+__`Number_Of_Frames`__
 
-The number of stored chunks in the data.
+The number of stored frames in the data.
 
 __`Seek_Table_Descriptor`__
 
@@ -87,13 +87,13 @@ for example the addition of inline dictionaries.
 
 __`Checksum_Flag`__
 
-If the checksum flag is set, each of the seek table entries contains a 4 byte checksum of the uncompressed data contained in its chunk.
+If the checksum flag is set, each of the seek table entries contains a 4 byte checksum of the uncompressed data contained in its frame.
 
 `Reserved_Bits` are not currently used but may be used in the future for breaking changes, so a compliant decoder should ensure they are set to 0.  `Unused_Bits` may be used in the future for non-breaking changes, so a compliant decoder should not interpret these bits.
 
 #### __`Seek_Table_Entries`__
 
-`Seek_Table_Entries` consists of `Number_Of_Chunks` (one for each chunk in the data, not including the seek table frame) entries of the following form, in sequence:
+`Seek_Table_Entries` consists of `Number_Of_Frames` (one for each frame in the data, not including the seek table frame) entries of the following form, in sequence:
 
 |`Compressed_Size`|`Decompressed_Size`|`[Checksum]`|
 |-----------------|-------------------|------------|
@@ -101,12 +101,12 @@ If the checksum flag is set, each of the seek table entries contains a 4 byte ch
 
 __`Compressed_Size`__
 
-The compressed size of the chunk.
-The cumulative sum of the `Compressed_Size` fields of chunks `0` to `i` gives the offset in the compressed file of chunk `i+1`.
+The compressed size of the frame.
+The cumulative sum of the `Compressed_Size` fields of frames `0` to `i` gives the offset in the compressed file of frame `i+1`.
 
 __`Decompressed_Size`__
 
-The size of the decompressed data contained in the chunk.  For skippable or otherwise empty frames, this value is 0.
+The size of the decompressed data contained in the frame.  For skippable or otherwise empty frames, this value is 0.
 
 __`Checksum`__