You will find here a list of the functions and variables of Logo. For a more complete description and examples, please consult the user's guide
1.Instructions not returning a value:
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back(distance);
background color(color);
change angle(angle);
change font(name);
change size(size);
change style(number);
change x(number);
change xy(number1,number2);
change y(positiony);
clear screen();
circle(distance x,distance y);
don't wrap();
draw();
fill circle(distance x,distance y);
fill round square(distance x,distance y);
fill square(distance x,distance y);
forward(distance);
full screen();
hide cursor();
hide turtle();
image("name",dimension x,dimension y);
initialize();
mask();
normal screen();
pen color(color);
pen down();
pen up();
print("sentence");
right(angle);
round square(distance x,distance y);
show turtle();
square(distance x,distance y);
unmask();
wait for click();
wrap();
2. Instructions returning a value:
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These instructions are useful for calculating numbers.
read character(variable);
variable=absolute(number);
variable=arccosine(value);
variable=arcsine(value);
variable=cosine(angle);
variable=logarithm(number);
variable=sinus(angle);
variable=square root(number);
variable=tangent(angle);
3.Variables:
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There is a certain number of pre-defined variables. Most of these can have their names and values changed by the user. A few of these, followed by an asterisk *, cannot have their value changed by the user : these variables are read-only variables.