Question on the usage of levels

[maztentropy]

Could the general usage of this attribute be clarified a bit further?

• When using doorstop add REQ the new item seems to be assigned a ".n+1" to the highest existing level (where n is the highest sublevel).
  • E.g.: If my highest level is 20 and I've already created 3 elements in that level my new item will be assigned a 20.4.
• -l can be used to specify the exact level of the item you wish to create but if that level already exists it will be taken from the other item that holds it.
• Is there any way to create a new item given a level (say "1") but just use the next one available?
  • E.g.: 1.1, 1.2, 1.3 & 2.1 already exist and I would like to create the next available level 1 (1.4) without necessarily knowing how many have been taken already?