Update api.md

docs/api.md

@@ -5,9 +5,6 @@ This is a documentation-ish for the `LMathPluginAPI` object, revealed to plugins
 ## Common
 These methods and variables are available on both the backend part and the frontend part.
 
-### api.getLogger()
-Returns the `log4js` logger.
-
 ### api.getVersion()
 Returns current L'Math version.
 
@@ -43,6 +40,19 @@ The messageData object will be converted to JSON and passed as a parsed object t
 
 ## Backend
 
+### api.getSessionId() (`String`)
+Returns the current session identifier
+### api.getLogger() (lo4js logger)
+Returns the `log4js` logger.
+### api.getWindow() (`BrowserWindow`)
+Returns the main Electron window of the app
+### api.getDataFolder() (`String`)
+Returns the absolute path to L'Math's data folder
+### api.getTempFolder() (`String`)
+Returns the absolute path to the session-specific temp folder
+### api.getPluginsFolder() (`String`)
+Returns the absolute path to L'Math's plugin folder
+
 ### events
 
 * `fileOpened`
@@ -54,6 +64,25 @@ The messageData object will be converted to JSON and passed as a parsed object t
     * Called when a file has been succesfully saved
     * Event data:
         * `file` - the absolute path to the file
+* `pageImport`
+    * Called when a page is about to be loaded from file (and possibly safe-checked)
+    * Event data:
+        * `pageId` - the id of the page
+        * `content` - the HTML contents, **can be modified**
+* `pageLoaded`
+    * Called when a page has been loaded (from file or from cache) and is about to be sent to the frontend
+    * Event data
+        * `pageId` - the id of the page
+        * `content` - the HTML contents, **can be modified**
+* `pageSave`
+    * Called before saving a page to its temporary file
+    * Event data 
+        * `pageId` - the id of the page
+        * `content` - the HTML contents, **can be modified**
+* `pageSaved`
+    * Called when a page has been succesfully saved to its temporary file
+    * Event data 
+        * `pageId` - the id of the page
 
 ## Frontend