tree234 *screen; /* lines on primary screen */
tree234 *alt_screen; /* lines on alternate screen */
int disptop; /* distance scrolled back (0 or -ve) */
+ int tempsblines; /* number of lines in temporary
+ scrollback */
unsigned long *cpos; /* cursor position (convenience) */
int alt_cset, alt_sco_acs, alt_utf;
int alt_t, alt_b;
int alt_which;
+ int alt_sblines; /* # of lines on alternate screen that should be used for scrollback. */
#define ARGS_MAX 32 /* max # of esc sequence arguments */
#define ARG_DEFAULT 0 /* if an arg isn't specified */