new chapter: Basic

code/Basic/bywater-1.bas

@@ -0,0 +1,4 @@
+   10  CLEAR
+   20  FOR I=1 TO 10
+   30     PRINT I, I*I
+   40  NEXT I

code/Basic/yabasic-1.bas

@@ -0,0 +1,3 @@
+    for i=1 to 10
+        print i, i*i
+    next

code/Basic/yabasic-2.bas

@@ -0,0 +1,5 @@
+        open window 511,511
+        for x=10 to 495 step 5:for y=10 to 495 step 5
+                colour x/2,y/2,0
+                fill rectangle x,y,x+5,y+5
+        next y:next x