Topic nodes are high level nodes with proper names:

• calculated data link

• goal

• goal group

• simple_data_link

Proxy nodes stand in for and do the work of topic-nodes:

• data link proxy

• fuzzy curve

• goal group proxy

• goal proxy

• switch

• crisp argument

• fuzzy argument

• xy-pair

• and

• compare

• crisp argument

• data link proxy

• false

• fuzzy argument

• fuzzy curve

• goal group proxy

• goal proxy

• if

• not

• or

• sor

• switch

• true

• undetermined

• union

• xor

Conditional nodes can change the path of evaluation:

• if

• sor

• switch

• e

• error

• false

• k

• pi

• true

• undetermined

• abs

• acos

• addition

• asin

• atan

• ave-nz

• ave

• ceil

• cos

• cosh

• deg2rad

• division

• equation

• exp

• floor

• if

• ln

• log

• max

• min

• mod

• multiplication

• pow

• rad2deg

• sin

• sinh

• sqrt

• subtraction-negation

• tan

• tanh