#### 11.2.1 globlal options

• hiddenLines := < 0/1 >: that option is taken in count by the macro bdLine. This is the default value of the option hidden. If its value is $1$, the line is drawn a second time but on top of the scene, in the same color, with the style HideStyle and thickness HideWidth (or $0.8$pt if its value is Nil). That superposition is not seen on visible parts of the line, but only on hidden parts.
• TeXifyLabels := < 0/1 >: that option is taken in count by the macro bdLabel. This is the default value of the option TeXify, it shows if the label is a math formula that has to be compiled by TEX, TeXgraph launch a pdflaTeX compilation in the background then call the tool pstoedit (http://www.pstoedit.net/) that translate the pdf file into flattened postscript that TeXgraph can then parse to get the formula in the form of paths. This assumes a TEX distribution is intalled with the program pstoedit. The compiled file is called tex2FlatPs.tex, and can be found in the directory \$HOME/.TeXgraph of the linux user, and in c:\tmp under windows. There is also one copy in the installation directory of TeXgraph, by default that file is using the fourier font with 12pt, if the variable dollar is $1$, the formula is inserted between two delimiters: \[..\], if not, it is let unchanged, and it is composed with the size \large. By default, that option is $0$.