rem: if (this.lineH == null) {this.lineH = this.h} 
context:   Init: function() {    this.em = this.BBoxFor('<DIV STYLE="width: 20em; height: 1em"></DIV>').w/20;    var h = this.BBoxFor('x').h;    // Line height and depth to baseline    var d = this.BBoxFor('x<IMG SRC="'+jsMath.black+'" HEIGHT="'+h+'" WIDTH="1">').h - h;    this.h = (h-d)/this.em; this.d = d/this.em;    this.hd = this.h + this.d;    this.ph = h-d; this.pd = d;    if (this.lineH == null) {this.lineH = this.h}        this.InitTeXfonts();        var x_height = this.EmBoxFor('<SPAN CLASS="cmr10">M</SPAN>').w/2;    this.TeX.M_height = x_height*(26/14);    this.TeX.h = this.h; this.TeX.d = this.d; this.TeX.hd = this.hd;    // factor for \big and its brethren    this.p_height = (this.TeX.cmex10[0].h+this.TeX.cmex10[0].d) / .85;    this.InitSizes();        this.initialized = 1;  },
meta: 7708	/local1/tlutelli/issta_data/temp/all_js/javascript/2006_temp/2006/7708/a3e8347a5a397c4d835558d61477842a31fe0476/jsMath.js/buggy/htdocs/jsMath/jsMath.js