i've never actually tried it, but if it does work, it will work by switching between +0 and +a... 

The func_wall's use is set to func_wall_use, so it's going to always be switching between the textures. I worked around it. 

1. How can i flip a texture? I went through the options for like 20 mins trying to find this to no avail.

2. I don't see anything resembling visgroups, so how does one manage large maps? Invert the selection and hide everything?

3. Is there anyway to search for specific brushes/entities? Either by type (misc_*, info_*) or by targetname? It seems like that would be useful. 

jt_ to flip a texture, usually you have to set the scale to a negative figure, i.e. "'x' scale" = "-1".

I don't know if this works in Radiant, but I would have thought so, surely? 

Setting the horizontal/vertical stretch to a negative number will flip it.

There are no vis groups, you can try selecting, inverting, hiding to remove unwanted parts of the map from view, or try using regions, which (iirc) basically removes anything not in view from your map. It doesn't delete it, it just hides, without 'hide'-ing it. It should be under Misc->Region. I am not too familiar with it, I never use it, but that's the closest I can give you.

There is an entity list to look through which will help you out. 'L' is the default short cut. You can also search by brush or entity #, under Misc->Find Brush.

Hope this helps. 

That sounds dumb. 

It's a little awkward to use at times, but it does the job. Using this, you can still hide stuff within the selected region, so it's better for that purpose. It's also a good idea to make a shortcut for "Region off". 

at least some compilers will give an error with a brush number, this lets you find that brush. How else you gonna find it? 

But any other time it seems silly. 

that does sound handy. the other way is to go to the given line number in the map file (in a text editor) make a note of the coords and find it that way, which is a bit long winded 

sikkpin's radiant has alt+x, alt+y and alt+z to the different axis regions and then alt+o for region off. nothing like that in gtkr/netradiant? 

Did I understand it correctly that a region will only display what's already in the view? Is that only a performance enhancement? Or does it reduce visual clutter in any way? 

it reduces visual clutter, yes. when you turn a region on, everything outside the region isn't shown. 

defines a region? How is it then different from a visgroup? 

necros: Not by default anyway. Only for turning brushes into a region, not for deactivating it.

SleepwalkR: You select a bunch of brushes (=a certain region of the map) and the rest will not be displayed. For example, if you have a multi-story building but only want to work on the upper floor, you can make that a region so the 2D top view is less cluttered. It's like a negative hide function. 

Thanks for explaining. 

QuArK's system is the best though. You can organise your map in a "folder tree". You have folders in which you can put your brushes and entities. Those you can then make ignored on building, hide, gray out, make unselectable etc. Could not be easier to organise complex maps. 

http://www.quaketastic.com/upload/files/screen_shots/quarkgroups.png 

get stored? Are they hidden in comments in the map file? Or is there an extra file next to the map? Or does Quark have its own format? 

It has its own map format, .qkm (binary I think). When you tell it to build, it saves a .map file. You can also always save as .map but then you lose those groups and some other features. 

I wonder why they don't just save their extra info as comments in the map files. 

quark really has the best way of organizing stuff. from what i remember when i worked on hl2 stuff, the wc visgroups are ok, but they aren't as easily managed as quark groups are. 

I use groups only if I really have to. Otherwise I use Cubic Clip. 

Sometimes I have to grab half of the map and hide it, but there's no control over it really, I just use rectangle select and hide half of the map.