76 int cre8ecs( fwd, bck, num )  in cre8ecs()  argument
77 int fwd[], bck[], num;  in cre8ecs()
89 		if ( bck[i] == NIL )
91 			bck[i] = ++numcl;
93 				bck[j] = -numcl;
115 void mkeccl( ccls, lenccl, fwd, bck, llsiz, NUL_mapping )  in mkeccl()  argument
117 int lenccl, fwd[], bck[], llsiz, NUL_mapping;
136 		oldec = bck[cclm];
163 					bck[i] = newec;
179 			bck[i] = oldec;
189 		if ( bck[cclm] != NIL || oldec != bck[cclm] )
191 			bck[cclm] = NIL;
210 void mkechar( tch, fwd, bck )  in mkechar()  argument
211 int tch, fwd[], bck[];  in mkechar()
218 		bck[fwd[tch]] = bck[tch];
220 	if ( bck[tch] != NIL )
221 		fwd[bck[tch]] = fwd[tch];
224 	bck[tch] = NIL;