Open Watcom FORTRAN 77 Language Reference

Format
11.7.1 Apostrophe Editing
The apostrophe edit descriptor has the same form as a character constant and can only be used on output.
It causes the characters in the format specification enclosed in quotes to be written. The field width is the
number of characters enclosed in quotes.
Example:
PRINT ’(’’HI THERE’’)’
END
In the previous example, the string
HI THERE
would be the output produced by the PRINT statement.
11.7.2 H Editing
The nH edit descriptor causes the n characters following the H, including blanks, to be written. Like the
apostrophe edit descriptor, it can only appear in a format specification used for output.
Example:
PRINT ’(8HHI THERE)’
END
In the previous example, the string
HI THERE
would be the output produced by the PRINT statement.
11.7.3 Positional Editing: T, TL, TR and X Editing
The T, TL, TR and X edit descriptors specify at which position the next character will be read from or
written to the record. In the case of input, this allows data to be read more than once with different edit
descriptors. On output, it is possible to overwrite data previously written.
On output it is possible to use positional editing to create a record in which gaps appear. That is, there may
be parts of the record where no data has been written. The parts of a record in which no data has been
written are filled with blanks. The effect is as if the record was previously initialized to blanks. Note that
positioning does not cause any data to be transmitted.
The Tc edit descriptor specifies that the next character to be transmitted is to be from the cth character
position in the record. The TLc edit descriptor specifies that the next character to be transmitted is to be
from the cth position backward from the current position. The TRc edit descriptor is identical to the TLc
edit descriptor except that positioning is forward from the current position. The nX edit descriptor behaves
identically to the TRc edit descriptor; the transmission of the next character is n character positions forward
from the current position. If n is omitted then the transmission of the next character is 1 character position
forward from the current position.
Editing 229