im new and love text games... actualy i just cant figure out how to make a box so the player dosent sink through it

                                    ` This code was downloaded from The Game Creators
                                    ` It is reproduced here with full permission
                                    ` http://www.thegamecreators.com
                                    
                                    hide mouse
ink rgb(255,0,0),rgb(0,0,0)
set cursor 220,240
print "to move to next action press any key but esc"
wait key
cls
set cursor 140,240
print "or enter text if you see a > at the end of a line and spell it out"
wait key
cls
set cursor 220,240
print "ps alex made the game wink, wink"
wait key
cls
set cursor 100,240
print "you see an odd house made out of a bubble just floating around"
wait key
cls
set cursor 220,240
input "would you like to enter>";a$
if a$="yes"
cls
set cursor 300,240
print "good"
sleep 1500
cls
set cursor 60,240
print "you enter and see an old man hunched over creating a wonderfuly deadly stew"
wait key
cls
set cursor 60,240
print "scared you jump back making a loud thump as you hit the wall.  he notices you"
wait key
cls
set cursor 300,240
print "dun dun dun"
wait key
cls
set cursor 190,240
input "he asks you your name>";name$
cls
set cursor 210,240
print "he asks 'what are you doing here little boy?'"
wait key
cls
set cursor 210,240
print "you say 'i came to see your magic'"
wait key
cls
set cursor 190,240
input "so who told you of my magic?";a$
if a$="alex"
cls
set cursor 220,240
print "oh well i gess i'll let you live then"
sleep 2500
cls
set cursor 220,240
print "so you want to see my magic???"
wait key
cls
set cursor 90,240
print "well then if Alex the almighty told you about me i'll show you "
wait key
cls
set cursor 90,240
input "ready print yes or no, no if you cant handle it";nams$;">";$
if $="yes"
cls
print "if you like this and where its goingplease send it to your friends"
print "and email me (alex) at orionsgalaxy@hotmail.com and tell me"
print "also include comments on where you would like this to go"
endif
endif
endif