17
votes
2answers
320 views

Defining a dimension with or without @

If I am writing a TeX package (as one can find such on CTAN), there are following approaches to define a new dimension length that should be changeable by a user of that package. Approach A: Define ...
10
votes
1answer
554 views

What is the right way to set a dimension parameter?

In the TeXbook Knuth set parameters for dimensions mostly as follows: \parskip=3pt Other package authors define such parameters without using the equal sign \parskip30pt Many later authors use ...