Version: 2.0.1 (using KDE 3.5.9) Compiler: gcc (Debian 4.3.2-1) 4.3.2 OS: Linux Installed from: Debian testing/unstable Packages LaTeX features the conditional \if statement to comment out blocks. It would be really great if Kile would recognize this, allowing folding of this structure (\if to \fi) and ignoring it in the structure tab when its conditional is false.
\iffalse ... \fi is recognized now by the latex highlightning. But it is neither a region which you can collapse nor is support in the structure view added.