On Mon, Feb 23, 2009 at 6:54 PM, Wolfgang Schuster <schuster.wolfgang@googlemail.com> wrote:

Am 23.02.2009 um 18:16 schrieb Alan Stone:

- does using \doifundefined{myMacro}{...} shorten tex runs/compile time ?

In which way?

As I don't know/understand what happens between (Lua)TeX runs, to keep macro definitions in memory.

- what are the features to avoid for shortest compile times ?

Depends on your document and what do you want.

My question was intended in a generic way, aka if you use

- these features ... expect longer or significant longer compile times, or
- these features ... generate the longest compile times.

To give you a better answer speak in complete sentences.

Wolfgang