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System Macros/Fundamentals (view source)
Revision as of 10:46, 23 September 2007
, 10:46, 23 September 2007→Conditional execution of engine-specific code: wrong case in link
=== Conditional execution of engine-specific code ===
In [[source:syst-prm.tex| syst-prm.tex]], a few macros are defined that can be used to delimit code that uses engine-specific features. <code>\beginTEX</code> and <code>\beginETEX</code> are mutually exclusive, depending on whether or not the format file was compiled under an e-TeX-enabled executable. In the latest ConTeXt releases, this will always imply using the <code>\beginETEX</code> code, because e-TeX availability has recently become a requirement for ConTeXt. The macros will stay, however, because bits and pieces of ConTeXt are used in formats like [[LaTeX]] and [[mptopdfMPtoPDF]], that are not necesarily e-TeX.
A typical way of setting up your code to use e-TeX is like this:
