Tandy 1000 MS-DOS Reference Manual page 250

Chapter 10 / EDLIN Command Reference
Write Lines (W)
[number]W
Writes a specified number of edited lines from memory to disk.
Writing begins with Line 1.
This command is meaningful only if the file you are editing is
too large to fit into memory. When you start EDLIN, files are
loaded until memory is 75% full. To edit the rest of your file, you
must first write edited lines in memory to disk. Then you can
load the unedited lines from disk into memory, using the
Append command.
Note
If you omit the number, EDLIN writes lines until 25% of mem-
ory is freed. If at least 25% already is freed, EDLIN takes no
action. All lines remaining in memory (not written to disk) are
renumbered starting with Line
1.
Example
1 ""
w
I
ENTER
I
writes Lines 1 through 100 to disk and renumbers the file in
memory, starting with Line 101 as Line
1.
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