It allows you to access system fonts (TrueType, OpenType, etc) and set font features. In a typical LaTeX document, you include something like this in your headers:It's the fontspec package that allows for \setmainfont and \setmonofont.The ability to choose a multitude of font features is beyond my expertise, but I would suggest looking up some examples and seeing if this would suit your needs.t allows you to access system fonts (TrueType, OpenType, etc) and set font features. In a typical LaTeX document, you include something like this in your headers:
pectinate muscle. pectinate muscle in Medicine. pectinate muscle n. Any of the prominent ridges of atrial myocardium located on the inner surfaces of much of the right atrium and of both auricles.
The pectinate muscles are shaped a bit like brush bristles, and  their function is to allow maxium contraction of the atria using  the minimal muscle mass. Papillary muscles â¦ are connected to strong  tendons in the ventricles called the chordae tendinae, which gives  them a lot of strength.