Rules for Tools/savesong()
long savesong(long file, struct Environment *environment)
`struct Environment *environment'
Environment to save.
Use `savesong()' to save an Environment to disk. You must first
open file using the fast file i/o routine `fastopen()'. Then,
pass the file pointer and environment to `savesong()'. If you are
saving the currently installed song, pass the functions pointer
instead of an Environment pointer, to indicate the currently
installed Environment is to be saved.
See clearenvironment(), installenvironment(), loadsong().