+\fBchar erasechar_sp(SCREEN*);\fR
+.br
+\fBint extended_color_content_sp(SCREEN *, int, int *, int *, int *);\fR
+.br
+\fBint extended_pair_content_sp(SCREEN*, int, int *, int *);\fR
+.br
+\fBint extended_slk_color_sp(SCREEN*, int);\fR
+.br
+\fBvoid filter_sp(SCREEN*);\fR