In a format specification, the colon character (:) terminates format control if there are no more items in the I/O list. For example:
PRINT 1,3 PRINT 2,13 1 FORMAT (' I=',I2,' J=',I2) 2 FORMAT (' K=',I2,:,' L=',I2)
These statements produce the following output (the symbol ^ represents a nonprinting space character):
I=^ 3^ J= K=13
The colon edit descriptor has no effect if I/O list items remain.
For details on format control, see Section 8.10.