COMMENT ⊗   VALID 00002 PAGES
C REC  PAGE   DESCRIPTION
C00001 00001
C00002 00002	  external  simple  procedure  ssgout
C00004 ENDMK
C⊗;
  external  simple  procedure  ssgout;
  external  simple  procedure  ssgin;
external  simple  procedure  ssgreset(integer file);
external  simple  procedure  ssgrdopen;
external  simple  procedure  ssgwtopen;
external  simple procedure  mltotl;
external  simple procedure  ssgrclose;
external  simple procedure  ssgwclose;
external  simple  procedure  ssgtty;
external  simple  procedure  ssginid(integer  ssegid);
external  simple  procedure  wssghdr;
external  procedure  ssegzoom;
  external  simple  procedure  editheader;
external  simple  procedure  rssghdr;
external  simple  procedure  ssgrwopen;
external  simple  procedure  segrange(integer  ssegid;
  reference  integer  segid1, segid2);
external  simple  integer  procedure  nofssg;
  external  simple  procedure  ssgdep(integer  zn,zf,zns,zr1,zc1,zr2,zc2; real zml);
external  simple  procedure  deparms(integer s, r, c);
external  simple  procedure  ssegtofile(integer chan);
external  simple  integer  procedure  noofsseg;
external  simple  real  procedure  ssgmaxl(integer ssegid);