/*  * This file is part of the UCB release of Plan 9. It is subject to the license * terms in the LICENSE file found in the top-level directory of this * distribution and at http://akaros.cs.berkeley.edu/files/Plan9License. No * part of the UCB release of Plan 9, including this file, may be copied, * modified, propagated, or distributed except according to the terms contained * in the LICENSE file. */ #include "a.h" /* * Section 3 - page control (mostly irrelevant). */ /* page offset */voidpo(int o){	nr(L(".o0"), getnr(L(".o")));	nr(L(".o"), o);} voidr_po(int argc, Rune **argv){	if(argc == 1){		po(getnr(L(".o0")));		return;	}	if(argv[1][0] == '+')		po(getnr(L(".o"))+evalscale(argv[1]+1, 'v'));	else if(argv[1][0] == '-')		po(getnr(L(".o"))-evalscale(argv[1]+1, 'v'));	else		po(evalscale(argv[1], 'v'));} /* .ne - need vertical space *//* .mk - mark current vertical place *//* .rt - return upward */ voidt3init(void){	nr(L(".o"), eval(L("1i")));	nr(L(".o0"), eval(L("1i")));	nr(L(".p"), eval(L("11i")));		addreq(L("pl"), r_warn, -1);	addreq(L("bp"), r_nop, -1);	addreq(L("pn"), r_warn, -1);	addreq(L("po"), r_po, -1);	addreq(L("ne"), r_nop, -1);	addreq(L("mk"), r_nop, -1);	addreq(L("rt"), r_warn, -1);}