Clarification: Well-versed (Bard)

[sixstringssamurai]

Hi. This is actually my first post here. I was curious if someone could clarify the meaning of "language-based" in the description of the bard's Well-Versed class feature. In the core rule book, it states:

Quote:

Well-Versed (Ex): At 2nd level, the bard becomes resistant

to the bardic performance of others, and to sonic effects
in general. The bard gains a +4 bonus on saving throws
made against bardic performance, sonic, and language-dependent
effects.

My question is what qualifies as a language-dependent effect? Specifically, does the "Dominate Person" spell count? How much language is required to be present for an effect to become "language-dependent"?

[Selgard]

Language-dependent effects are those that say in their description that they require you to communicate in a common language for them to work.

They also say "language dependent" in the tag line of the spell.

For example:

Suggestion
School enchantment (compulsion) [language-dependent, mind-affecting]; Level bard 2, sorcerer/wizard 3
Casting Time 1 standard action
Components V, M (a snake's tongue and a honeycomb)
Range close (25 ft. + 5 ft./2 levels)
Target one living creature
Duration 1 hour/level or until completed
Saving Throw Will negates; Spell Resistance yes

You influence the actions of the target creature by suggesting a course of activity (limited to a sentence or two). The suggestion must be worded in such a manner as to make the activity sound reasonable. Asking the creature to do some obviously harmful act automatically negates the effect of the spell.

The suggested course of activity can continue for the entire duration. If the suggested activity can be completed in a shorter time, the spell ends when the subject finishes what it was asked to do. You can instead specify conditions that will trigger a special activity during the duration. If the condition is not met before the spell duration expires, the activity is not performed.

A very reasonable suggestion causes the save to be made with a penalty (such as –1 or –2).