Merge pull request #892 from boriel-basic/docs

doc: add POINT documentation

Author: boriel

docs/identifier.md

@@ -127,7 +127,7 @@ You should also avoid defining (with a SUB or FUNCTION command) routines with th
 * **[GetKeyScanCode (Library Function)](library/keys/getkeyscancode.md)** **(function)**
 * **[LCase (Library Function)](library/string/lcase.md)** **(function)**
 * **[UCase (Library Function)](library/string/ucase.md)** **(function)**
-* **[POINT (Library Function)](library/string/point.md)** **(function)**
+* **[POINT (Library Function)](library/point.md)** **(function)**
 * **[POS (Library Function)](library/pos.md)** **(function)**
 * **[print42 (Library Subroutine)](library/print42.bas.md)** **(sub)**
 * **[printat42 (Library Subroutine)](library/print42.bas.md)** **(sub)**

docs/library/csrlin.md

@@ -24,5 +24,7 @@ CSRLIN is a library function to be included with the following command:
 
 ## See also
 
-* [ POS](pos.md)
 * [ AT ](../at.md)
+* [ SCREEN ](screen.md)
+* [ POINT ](point.md)
+* [ POS](pos.md)

docs/library/point.md

@@ -0,0 +1,43 @@
+# POINT
+
+## Syntax
+
+
+```
+POINT(x, y)
+```
+
+## Description
+
+Returns 1 if the pixel at coordinates (x, y) is set. 0 if it is not.
+
+## Requirements
+
+POINT is a library function to be included with the following command:
+
+
+```
+# include <point.bas>
+```
+
+## Sample usage
+
+```basic
+# include <point.bas>
+
+PLOT 10, 10
+PRINT "Point at (10, 10) is "; POINT(10, 10): REM 1
+PRINT "Point at (15, 15) is "; POINT(15, 15): REM 0
+```
+
+## Remarks
+
+* This function extends the one in Sinclair BASIC (and it's compatible with it) since it also allows rows 22 and 23.
+* When using `--sinclair` cmd line parameter this function is already available (i.e. no `#include <point.bas>` sentence is needed)
+
+## See also
+
+* [ AT ](../at.md)
+* [ CSRLIN ](csrlin.md)
+* [ SCREEN ](screen.md)
+* [ POS](pos.md)

docs/library/pos.md

@@ -18,3 +18,5 @@ POS is a library function to be included with the following directive:
 
 * [ AT ](../at.md)
 * [ CSRLIN](csrlin.md)
+* [ POINT ](point.md)
+* [ SCREEN ](screen.md)

docs/library/screen.md

@@ -23,7 +23,7 @@ SCREEN is a library function to be included with the following command:
 
 ## Sample usage
 
-```
+```basic
 # include <screen.bas>
 
 PRINT AT 9, 10; "A"
@@ -38,6 +38,7 @@ PRINT AT 0, 0; "The character at 9, 10 is "; c$
 
 ## See also
 
-* [ CSRLIN ](csrlin_.md)
-* [ POS](pos_.md)
 * [ AT ](../at.md)
+* [ CSRLIN ](csrlin_.md)
+* [ POINT ](point.md)
+* [ POS](pos.md)