System information

Figure 2-2. Memory Buffer Organization
2.1.2 Text Transfer Functions
Given that n is an integer value in the range 0 through 65535, several single-letter ED commands
transfer lines of text from the source file through the memory buffer to the temporary (and
eventually final) file. Single letter commands are shown in upper-case, but can be typed in either
upper- or lower-case.
Table 2-1. ED Text Transfer Commands
Command Result
nA Appends the next n unprocessed source lines from the source file at SP to the end
of the memory buffer at MP. Increment SP and MP by n. If upper-case translation
is set (see the U command) and the A command is typed in upper-case, all input
lines will automatically be translated to upper-case.
nW Writes the first n lines of the memory buffer to the temporary file free space. Shift
the remaining lines n + 1 through MP to the top of the memory buffer.
Increment TP by n.
2.1 Introduction to ED CP/M Operating System Manual
2-3