Temporary PAM files in virtual memory (INCORE files)

If the file name "(INCORE)" is specified with the functions fopen(), freopen(), or open(), a temporary PAM file is created in virtual memory. This file "exists" only for the duration of a program run.

INCORE files must be opened for writing before they can be accessed for reading (see also fopen(), freopen(), open()).

INCORE files are processed as binary files.