You can configure different element help text here.
(The entries below are default and therefore commented out.)

player_1:     The hero - you have to control

sand:         Sand: Brown, green and gray - diggable for the player
custom_184:   Walkable walls: player can walk under, in order to push abutting puzznic elements.
custom_256:   Normal Wall: NOT walkable under
rock:         Behave like a normal rock: NOT walkable under and slippery.
custom_164:   Elevator:  moving up Puzznic Elements and Rocks
custom_129:   Puzznic Element  green (behaviour - see level set info)
custom_130:   Puzznic Element  yellow (behaviour - see level set info)
custom_131:   Puzznic Element  blue (behaviour - see level set info)
custom_132:   Puzznic Element  red (behaviour - see level set info)
