diff --git a/ideintf/docs/projectintf.xml b/ideintf/docs/projectintf.xml
index 9ab4fe83f1..00a9f350db 100644
--- a/ideintf/docs/projectintf.xml
+++ b/ideintf/docs/projectintf.xml
@@ -59,6 +59,49 @@
After creating the new project the IDE applies the users build modes and compiler options.
+
+
+ The active compiler options of the project. Each build mode has its own set of compiler options.
+ Do not store a reference to this.
+
+
+ The file path of the lpi
+
+
+ The file path of the lps
+
+
+ Where to store the project session
+
+
+ Set to true by project properties. Set it to false to clear all modified flags, excluding session flags
+ Units and build modes have their own Modified.
+
+
+ Set to true if some session data has changed. Set this to false to set all session flags to false.
+
+
+ Search path for fpdoc files. Multiple directories are separated by semicolon. Macros are allowed.
+
+
+ The fpdoc "package name". Leave empty to use project name.
+
+
+ File mask for the manual clean of the output directory. Default: all files
+
+
+ File mask for the source directories on a manual clean up. Default: ppu and o files
+
+
+ Name value pairs for designtime packages.
+ Every designtime package can store arbitrary data in each project. Use this property alone. All other unknown data will be purged from the lpi. It's recommended to use long and unique names like PackageName_MyPath.
+
+
+ As CustomData but stored in the lps
+
+
+ On OS X applications need a .app directory called an "Application Bundle".
+