write-char
(write-char integer [file_descriptor])
The write-char function writes a single character to a file specified by file_descriptor or to the Command Window.
The single character is specified by an ASCII code (given as integer).
Return Value
The function returns an integer value.
: (write-char 65)
A65 ; 65 is the return value
: (write-char (ascii "A"))
A65
: (setq fd (open "abc.txt" "w"))
<File: #4717:4624>
: (write-char 65 fd)
65