Update manual

Add more funcs

doc/manual.md

@@ -8,6 +8,17 @@ local syscalls = require("syscalls")
 
 ## Events
 
+### `WaitEvent()`
+
+Endless wait event
+
+### `WaitEventTimeout(timeout)`
+
+Wait timeout 1/100 sec
+
+return event or nil
+
+### Events list
 ```lua
 syscalls.Event.<EventName>
 ```
@@ -73,6 +84,55 @@ textSize, textLen, backgroundColor, encoding are optional.
 
 return color
 
+## Buttons
+
+### `GetButton()`
+
+return pressed button or nil
+
+### buttons
+
+button's ids that defined default by window with skin
+
+```lua
+syscalls.buttons.<Value>
+```
+
++ `close`
++ `minimize`
+
+## SystemColors
+
+### SystemColors type
+
+
+
+### `GetSystemColors()`
+
+return SystemColors
+
+### `SetSytemColors(SystemColors)`
+
+## Threads
+
+### `ThreadInfo(pid)`
+
+return table:
+```lua
+{
+	name: string,
+	pid: number,
+	cpu_usage: number,
+	memused: number,
+	winXPos: number,
+	winYPos: number,
+	winXSize: number,
+	winYPos: number,
+	slotState: number,
+	windowState: number
+}
+```
+
 ## Sockets
 
 ### `OpenSocket(domain, type, protocol)`