Is a space needed in between asterisk and text (for list)

Hello,

Documentation says :
https://www.pmwiki.org/wiki/PmWiki/TextFormattingRules#BulletedLists

Bullet lists are made by placing asterisks at the beginning of the
line. Numbered lists are made by placing number-signs (#) at the
beginning of the line. More asterisks/number-signs increases the level
of bullet:

So my question is :
is a space requested in between asterisk/number-sign and text ?
what will happen if no space is used ?

Thank you,
Gilles.