Tandy 1000 MS-DOS Reference Manual page 104

Chapter 6 / Command Reference
Suppose your current directory contains these source files,
in which each letter represents a program line:
File1.src
File2.src
a
a
b b
d g
e h
f k
k m
m
0
n p
0
p
FC blocks the above files as follows:
File1.src
File2.src
a
a
b b
d g
e h
f k
k
m
m
n
0
0
p
p
For each block that contains a mismatch, FC displays:
*****
filenElme1
last line that matches in the two files
intermediate, non-matching lines in first file
next line that matches in the two files
*****
filenElme2
last line that matches in the two files
intermediate, non-matching lines in second file
next line that matches in the two files
*****
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