Index: INSTALL.txt
===================================================================
--- INSTALL.txt	(revision 2a436ea693ea5c59bf53d0fc77f9bb29924a4b67)
+++ INSTALL.txt	(revision 7fd1756f1e55651d4a8f4d0a0f18e21aab509fce)
@@ -12,12 +12,13 @@
   3. SUPPORTED PLATFORMS
   4. BUILDING AND INSTALLATION
-     4.1. GENERAL PROCEDURE
-     4.2. LINUX/UNIX
-     4.3. WINDOWS
-          4.3.1. USING MINGW
-          4.3.2. USING VISUAL STUDIO
-     4.4. WINDOWS MOBILE
-     4.5. SYMBIAN
-     4.6. OTHER PLATFORMS, SUPPORTED BY QT
+     4.1. COMMON INFORMATION
+     4.2. GENERAL PROCEDURE
+     4.3. LINUX/UNIX/BSD
+     4.4. WINDOWS
+          4.4.1. USING MINGW
+          4.4.2. USING VISUAL STUDIO
+     4.5. WINDOWS MOBILE
+     4.6. SYMBIAN
+     4.7. OTHER PLATFORMS, SUPPORTED BY QT
   5. UNINSTALLATION
   6. TROUBLESHOOTING
@@ -77,5 +78,48 @@
 ============================
 
-4.1 GENERAL PROCEDURE
+4.1. COMMON INFORMATION
+-----------------------
+
+To be able ot build TSPSG you need to have the following Qt modules:
+QtCore, QtGui and QtSvg. The first two are required, the last one is
+optional. To get support for additional image formats (i.e., JPEG and
+TIFF) you'll additionally need corresponding Qt imageformats plugins.
+
+If you want to build TSPSG without SVG support add nosvg to qmake
+CONFIG parameter, so that qmake command will typically be:
+
+    qmake CONFIG+=release CONFIG+=nosvg
+
+This way you will not depend on QtSvg module but will not be able to
+export solution graph in SVG format.
+
+
+TSPSG uses qmake PREFIX parameter to determine installation path for
+make install command. If you don't specify it when running qmake, it
+will be assigned the default value depending on the platform:
+
+ Platform          | Default PREFIX value
+-------------------|-------------------------------------
+ Linux/UNIX/BSD    | /usr
+-------------------|-------------------------------------
+ Windows           | %PROGRAMFILES% environment variable
+                   | (usually, it is "C:\Program Files")
+-------------------|-------------------------------------
+ Windows CE/Mobile | "\Program Files"
+-------------------|-------------------------------------
+ Symbian           | <ignored>
+-------------------|-------------------------------------
+
+NOTE: Please, note that there are no installation and/or packaging
+rules for MacOS and other platforms not mentioned in this table.
+
+
+By default, TSPSG uses precompiled header when being built. If you
+experience problems with it you may add CONFIG+=nopch parameter to
+qmake to disable the generation and use of the precompiled header.
+
+
+4.2. GENERAL PROCEDURE
+----------------------
 
 On most platforms the general building and installation procedure is:
@@ -94,6 +138,6 @@
 
 
-4.2. LINUX/UNIX
----------------
+4.3. LINUX/UNIX/BSD
+-------------------
 
 Open a shell, navigate to the directory where you have TSPSG source
@@ -125,15 +169,16 @@
 depending on your distribution.
 
-By default, executable will go to /usr/bin, COPYING and README will go
-to /usr/share/TSPSG, translations will go /usr/share/TSPSG/l10n, docs
-will go to /usr/share/doc/TSPSG-<VERSION>.
-
-
-4.3. WINDOWS
+The executable goes to <PREFIX>/bin; COPYING, ChangeLog.txt, README.txt
+and INSTALL.txt go to <PREFIX>/share/doc/TSPSG-<VERSION>.
+
+
+4.4. WINDOWS
 ------------
 
+TSPSG will be installed to <PREFIX>\TSPSG folder.
+
 NOTE: Please, read the Section 7 after reading this Section.
 
-4.3.1. USING MINGW
+4.4.1. USING MINGW
 ~~~~~~~~~~~~~~~~~~
 
@@ -153,9 +198,6 @@
     mingw32-make install
 
-TSPSG will be installed to %PROGRAMFILES%\TSPSG folder (usually, it is
-C:\Program Files\TSPSG).
-
-
-4.3.2. USING VISUAL STUDIO
+
+4.4.2. USING VISUAL STUDIO
 ~~~~~~~~~~~~~~~~~~~~~~~~~~
 
@@ -173,9 +215,6 @@
     nmake install
 
-TSPSG will be installed to %PROGRAMFILES%\TSPSG folder (usually, it is
-C:\Program Files\TSPSG).
-
-
-4.4. WINDOWS CE/MOBILE
+
+4.5. WINDOWS CE/MOBILE
 ----------------------
 
@@ -208,5 +247,5 @@
 
 
-4.5. SYMBIAN
+4.6. SYMBIAN
 ------------
 
@@ -249,5 +288,5 @@
 
 
-4.6. OTHER PLATFORMS, SUPPORTED BY QT
+4.7. OTHER PLATFORMS, SUPPORTED BY QT
 -------------------------------------
 
