Hold down shift, and you will see the cursor change to a little pair of scissors. Now can now trim as many walls as you like by individually clicking on the side you want removed! Look at 'Trimming Elements to Intersection Points' in the help files for more info.
A really useful function that I miss from AutoCAD is a fence (polyline) setting for trimming multiple objects in one go.
At the moment as you rightly say, you can only trim elements one at a time. In certain circumstances drawing a multi-segmented line across several elements to be trimmed at once is much faster. They wouldn't necessarily even have to be in a straight line.
The Split tool almost works like this but you can only do a single straight segment in one go.
A really useful function that I miss from AutoCAD is a fence (polyline) setting for trimming multiple objects in one go.
At the moment as you rightly say, you can only trim elements one at a time. In certain circumstances drawing a multi-segmented line across several elements to be trimmed at once is much faster. They wouldn't necessarily even have to be in a straight line.
The Split tool almost works like this but you can only do a single straight segment in one go.
You are absolutely right Barry. Thanks for the correction on both points. One was a mis-type and one was a mis-remembering! 
Next to each other on the Standard toolbar you have the Trim (scissors), Split (axe) and Adjust (arrow extending lines) buttons. The Adjust button can be handy for trimming multiple elements at one time, but as Barry pointed out only to a single edge at a time, not a polygon. Note too that the shorter segment of the element will usually be removed (although as seen in my AC16 example below the longer length of the right hand line was trimmed - not the case if it had been the only line selected for "adjusting" to the circle)
That would be useful but once u get use to it, it almost becomes second nature to hit the 'Ctrl' - Trim and 'Alt' - Droper and 'Ctrl + Alt' - Inject while working.
Also most people who use the computer often know where each key is without having to look, I am sure once u get use to it, it will also become second nature to you too
I know in AutoCAD there was just 'Ctrl + T' and then 'A' an u could trim everything an anything, but that was needed as everything was really 2D.
Also add a signature to your profile with the Version u using so it will help ppl better give an answer to the version you are using.
Also most people who use the computer often know where each key is without having to look, I am sure once u get use to it, it will also become second nature to you too
I know in AutoCAD there was just 'Ctrl + T' and then 'A' an u could trim everything an anything, but that was needed as everything was really 2D.
Also add a signature to your profile with the Version u using so it will help ppl better give an answer to the version you are using.
Lexi wrote:This is only for trimming/extending the length of wall (or lines) to a reference edge.
Hi Barry, this doesnt seem to work for curtain walls which is what i need help with. my curtain wall is on a slope and has an wall intersecting that needs trimming. any ideas how to do this? Thanks.
It won't trim a wall to a sloping curtain wall which is what you want.
Let's keep that conversation in your other post (in which I now see you are happy with the answer there).
Barry.
Are you saying that multi trim is possible?
If possible, may I ask for an explanation that a beginner can understand?
