Legal? Sitting on butt an then lay down

[Adam]

Originally Posted by mick

• The rule is clear but you undertood it to mean *more* based on what?
• Restrictions are spelled out. The allowance to sit and hold is shown. And as you showed most of the traveling rule is based upon what a player is allowed to do, while most of the other rules show what a player may not do.
• If the player touches his elbow for any reason other than sitting upright (which is permitted), then yes, I believe a violation has occurred.
• With no exception written for a player holding while sitting on the floor, I do not think an exception should be contrived.
• Again, if the player touches his body parts to the floor in an effort to sit up, I have no violation, but no movement by the player in the sitting position is permitted except passing, shooting and starting a dribble to rise. Neither laying down, nor leaning on an elbow is permitted.

I understand your interpretation, thanks Mick. I don't understand the portion highlighted in red, though.
It says a player may sit up, it doesn't specify that he may break other rules to do so.