---
name: "doc"
section: "4"
platform: "linux"
package: "txt2pdbdoc"
version: "1.4.4-8+b1"
release: "Debian 12 (Bookworm)"
platforms: ["linux"]
url: "https://new.carta.tech/doc/4"
---

# doc(4)

(Pilot standard text document) file format

## NAME

DOC - (Pilot standard text document) file format

## SYNOPSIS

```
struct doc_record0 {	/* 16 bytes total */
	Word	version;	/* 1 = plain text, 2 = compressed text */
	Word	reserved1;
	DWord	doc_size;	/* uncompressed size in bytes */
	Word	num_recs;	/* not counting itself */
	Word	rec_size;	/* in bytes: usually 4096 (4K) */
	DWord	reserved2;
};
```

## DESCRIPTION

The **Doc** file format is the standard text document format used by all models of the Palm Pilot. A **Doc** file is a [**pdb**(4)](/pdb/4.md) file: this manual page describes only those aspects specific to **Doc** files.

A **Doc** file consists of 0 to `num_recs` records; record 0 is the header for the document. (This header is distinct from the [**pdb**(4)](/pdb/4.md) header.) The remaining records contain text, either plain or compressed depending upon `version`.

### Word Sizes

In the synopsis above, the types \`\``Word`'' and \`\``DWord`'' are used just as in the Pilot headers. The type \`\``Word`'' is 16 bits; the type \`\``DWord`'' is 32 bits. Both are in big-endian format.

### Compression Format

A character \`\``c`'' in a compressed record is in one of four classes:

- `01-08`

  Copy \`\`c'' bytes

- `00,09-7F`

  Self

- `80-BF`

  Sequence

- `C0-FF`

  A space plus the ASCII character \`\``c ^ 0x80`''

## SEE ALSO

[txt2pdbdoc(1)](/txt2pdbdoc/1.md), [html2pdbtxt(1)](/html2pdbtxt/1.md), [pdbtxt2html(1)](/pdbtxt2html/1.md), [pdb(4)](/pdb/4.md)

Christopher Bey and Kathleen Dupre. *Palm File Format Specification*, Document Number 3008-003, Palm, Inc., May 16, 2000.

## AUTHOR

Paul J. Lucas \<*pauljlucas@mac.com*\>