LIGHT spellpower... heal or spellcraft?

[Enderoc]

Does heal only effect positive and negative spellpower or alignment and light as well?

Does spellcraft cover the latter?

I assumed heal had to do with more spiritual energies which light and enlighnment seem to be more attuned with while spellcraft was attuned to more physical or magical damage.

[Coffey]

Heal increases your Positive and Negative spell power
Perform increases your Sonic spell power
Repair increases your Repair and Rust spell power
Spellcraft affects everything else

Spell Power as written in the ddowiki (https://ddowiki.com/page/Spell_Power).