Definition of fn:IsPresent(key,cond)

[bdoubrov]

Currently this predicate is defined as:

fn:IsPresent(key,cond) For two parameters: asserts that only when key is present in a PDF, that cond should be true. e.g. fn:Eval(fn:IsPresent(Matte,(@Width==parent::@Width)))

The word only in this definition is misleading, as it might imply that if the key is not present, the cond should be false . However, for example, the original text for the Matte condition is:

ISO32000-2 Table 143 Width: If a Matte entry is present, shall be the same as the Width value of the parent image; otherwise independent of it.

Would be nice to clarify this and maybe remove the word only from the definition.