[Bug fortran/83057] OPEN(3f) without a filename and without STATUS='SCRATCH' does not produce a warning as being an extension on unassigned files

[urbanjost at comcast dot net]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=83057

--- Comment #2 from urbanjost at comcast dot net ---
A long-standing convention when referencing procedures anprd commands,
especially on Unix platforms is to suffix them with (category[group]) to
distinguish them from English words and to identify if talking about a
procedure or a command. "(3f)" just means a callalable function or procedure, f
typically means Fortran, "c" for the C programming language, "X11" for X11
Windows routines and so on. This helps to clarify such things as sleep,
sleep(1), and sleep(3c) --- respectively meaning "to slumber", the GNU/Linux or
Unix command sleep, and and the C routine sleep.