@@ -1,18 +1,5 @@
 Simple C and C++ programs, cheats and mini projects.
 
-Larger projects may be in separate dirs.
-
-There may be other compiled languages here for which we don't have much material for a separate dir, specially when we interface that language with C. Ex: Fortran.
-
-Non-portable features shall be clearly separated from portable ones in either:
-
-- ifdef blocks
-- separate files
-- separate directories
-- separate repositories
-
-# Bestof
-
 The most useful sections are currently:
 
 - [c/c.c](c/c.c): C cheatsheet.
@@ -24,11 +11,37 @@ Other reasonably useful cheats can be found under:
 - [opengl/](opengl/)
 - [kde/](kde/)
 
-# Cheatsheets
+# Install on Linux
+
+Most systems already have GCC installed, however some of this relies on the recent GCC 4.7 to be able to try out bleeding edge c11.
+
+This is not recommended for production.
+
+On Ubuntu 12.04, install GCC 4.8 with:
+
+    sudo add-apt-repository ppa:ubuntu-toolchain-r/test
+    sudo aptitude install -y update
+    sudo aptitude install gcc-4.8
+    sudo update-alternatives --install /usr/bin/gcc gcc /usr/bin/gcc-4.8 50
+
+# About
+
+Currently uses Linux tools, but Windows ports are welcome.
+
+Larger projects may be in separate dirs.
+
+There may be other compiled languages here for which we don't have much material for a separate dir, specially when we interface that language with C. Ex: Fortran.
+
+Non-portable features shall be clearly separated from portable ones in either:
+
+- ifdef blocks
+- separate files
+- separate directories
+- separate repositories
 
 Everything that can be checked in an assertion will be checked, and will not get printed.
 
-For exemple, a C addition operator `+` test should be done as:
+For example, a C addition operator `+` test should be done as:
 
     assert(1 + 1 == 2);
 
@@ -49,10 +62,6 @@ Features that:
 
 shall be put inside a block analogous to a `if (0){ ... }` to be turned on only when users want to test those specific features.
 
-Cheat source comments are writen in markdown *indented by headers* and commented out.
+Cheat source comments are written in markdown *indented by headers* and commented out.
 
 Every important keyword that one might search for in the feature has a hash before it, e.g. `#function`, `#include`, `#printf`, etc.
-
-# Contributing
-
-If you find any factual error, or want to include new information, you are more than welcome to send a PR!
 
@@ -0,0 +1,5 @@
+Cheatsheets, templates and info on C and C++.
+
+Attempts to understand every minute behavior and performance characteristic of the language and the stdlib.
+
+Whenever possible, asserts are used to make sure things are correct.
@@ -6491,39 +6491,51 @@ int main(int argc, char **argv)
                 //#control minimum number chars to output
                 {
                     /*
-                    #pad with spaces
+                    Pad with spaces, right align.
 
-                        Useful to output nicely formatted tables.
+                    Useful to output nicely formatted tables.
 
-                        Ugly:
+                    Ugly:
 
-                            12345 1
-                            1 1
+                        12345 1
+                        1 1
 
-                        Beautiful:
+                    Beautiful:
 
                         12345 1
                         1     1
-
                     */
                     {
                         sprintf(s, "%6.2f", 1.0f);
                         assert(strcmp(s, "  1.00") == 0);
                     }
 
                     /*
-                    #pad with zeros
-
-                        useful for naming files:
+                    Pad with zeros
 
-                        "10" comes after  "09" ('1' > '0')
+                    Useful for naming files: with `0`
 
-                        "10" comes before "9"  ('1' < '0')!
+                    - "10" comes after  "09" ('1' > '0')
+                    - "10" comes before "9"  ('1' < '0')!
                     */
                     {
                         sprintf(s, "%06.2f", 1.0f);
                         assert(strcmp(s, "001.00") == 0);
                     }
+
+                    /*
+                    Left align with `-`
+                    */
+                    {
+                        sprintf(s, "%-6s", "abc");
+                        assert(strcmp(s, "abc   ") == 0);
+
+                        // Does not work with zeros:
+
+                        sprintf(s, "%-06s", "abc");
+                        /*printf("%s\n", s);*/
+                        /*assert(strcmp(s, "abc   ") == 0);*/
+                    }
                 }
 
                 //#scientific