Editing Large Files

EDLIN cannot edit a file with more than 65,529 lines of text. It can edit a
file too large to fit entirely in memory. The only clue you get that the file 
is too large is from the prompt. Normally, when EDLIN starts up, it prints

	New file
	*

before editing a file being created, or

	End of file
	*

before editing a previously existing file. However, when editing a file that 
is too large to entirely fit in memory, it only prints 

	*

When editing large files that will not entirely fit into memory, EDLIN will 
start at the beginning and read until about 3/4 of available memory is used 
up. You can edit this part, and then W(rite) out what is in memory, read the 
next part of the file in with the A(ppend) command, and repeat this process 
until the entire file is edited. EDLIN will keep track of the line numbers 
of the part currently in memory. When you finally read in the last part of 
the file, the

	End of file
	*

prompt will be displayed.
