Original Format Workfiles
The original Qedit workfiles have a block size of 512 bytes and can hold up to 65,535 lines with a maximum length of 256 characters.
Within an original format data block, the structure is as follows:
Word Within Block Contents Comment
(000) Forward-pointer First word in block
(001) Line-number First word of first line
(002) (cont.)
(003) Data and Indent Descriptor for first line
(004) "AB" Contents of first line
(005) "CD"
(...) (cont.)
(...)
(Data+003) "YZ" End of first line
(Data+004) Line-number Start of second line
(Data+005) (cont.)
(Data+006) Data and Indent
(Data+007) "12"
(...)
(...) "89" End of last line
(...) Binary-zero Unused portion of block.
(...) (cont.) Binary-zeros are missing
(255) (cont.) if the block is full.The following definitions are used above:
Forward-pointer: block number of the next block (16-bit unsigned).
Line-number: a 32-bit integer containing the line number in binary (1,000 = 1.0).
Data: the number of words of data in the line (byte).
Indent: number of full words of blanks before the data (byte).
Qedit Version Number
Open stores the version number of the Qedit program file into the workfile that it opens. A 16-bit integer is stored at word offset 363 of Block 0. The format is, for example, 4258 for version 4.2.58, 4300 for 4.3, and 4301 for 4.3.01.