void blank_line __PROTO((text_t * et, rend_t * er, int width, rend_t efs));
void make_screen_mem __PROTO((text_t ** tp, rend_t ** rp, int row, rend_t rstyle));
void scr_reset __PROTO((void));
void scr_release __PROTO((void));
void scr_poweron __PROTO((void));
void scr_cursor __PROTO((int mode));
int scr_change_screen __PROTO((int scrn));
void scr_color __PROTO((unsigned int color, unsigned int Intensity));
void scr_rendition __PROTO((int set, int style));
int scroll_text __PROTO((int row1, int row2, int count, int spec));
void scr_add_lines __PROTO((const unsigned char *str, int nlines, int len));
void scr_backspace __PROTO((void));
void scr_tab __PROTO((int count));
void scr_gotorc __PROTO((int row, int col, int relative));
void scr_index __PROTO((int direction));
void scr_erase_line __PROTO((int mode));
void scr_erase_screen __PROTO((int mode));
void scr_E __PROTO((void));
void scr_insdel_lines __PROTO((int count, int insdel));
void scr_insdel_chars __PROTO((int count, int insdel));
void scr_scroll_region __PROTO((int top, int bot));
void scr_cursor_visible __PROTO((int mode));
void scr_autowrap __PROTO((int mode));
void scr_relative_origin __PROTO((int mode));
void scr_insert_mode __PROTO((int mode));
void scr_set_tab __PROTO((int mode));
void scr_rvideo_mode __PROTO((int mode));
void scr_report_position __PROTO((void));
void set_font_style __PROTO((void));
void scr_charset_choose __PROTO((int set));
void scr_charset_set __PROTO((int set, unsigned int ch));
void eucj2jis __PROTO((unsigned char *str, int len));
void sjis2jis __PROTO((unsigned char *str, int len));
void big5dummy __PROTO((unsigned char *str, int len));
void set_multichar_encoding __PROTO((const char *str));
int scr_get_fgcolor __PROTO((void));
int scr_get_bgcolor __PROTO((void));
void scr_expose __PROTO((int x, int y, int width, int height));
void scr_touch __PROTO((void));
int scr_move_to __PROTO((int y, int len));
int scr_page __PROTO((int direction, int nlines));
void scr_bell __PROTO((void));
void scr_printscreen __PROTO((int fullhist));
void scr_refresh __PROTO((int type));
void scr_clear_tint __PROTO((int bWithTinting));
void on_colors_changed __PROTO((int idx));
void scr_reverse_selection __PROTO((void));
void selection_check __PROTO((int check_more));
void PasteIt __PROTO((unsigned char *data, unsigned int nitems));
void selection_paste __PROTO((Window win, unsigned prop, int Delete));
void selection_request __PROTO((Time tm, int x, int y));
void selection_clear __PROTO((void));
void selection_make __PROTO((Time tm));
void selection_click __PROTO((int clicks, int x, int y));
void selection_start_colrow __PROTO((int col, int row));
void selection_delimit_word __PROTO((int dirn, row_col_t * mark, row_col_t * ret));
void selection_extend __PROTO((int x, int y, int flag));
void selection_extend_colrow __PROTO((int col, int row, int button3, int buttonpress, int clickchange));
void selection_rotate __PROTO((int x, int y));
void selection_send __PROTO((XSelectionRequestEvent * rq));
void pixel_position __PROTO((int *x, int *y));
void mouse_tracking __PROTO((int report, int x, int y, int firstrow, int lastrow));
void debug_PasteIt __PROTO((unsigned char *data, int nitems));
void debug_colors __PROTO((void));
void setPosition __PROTO((XPoint *pos));