0

Display no information

1

Display only severe errors

2

Display severe and serious errors (default)

3

Display warnings as well as severe and serious errors

4

Give a full report on variable usage as well as displaying errors and warnings

0

No errors or warnings

1

Warnings

2

Serious errors

3

Severe errors

Used as a value

Used as a table or list element

Used as a call-by-value parameter

Used as a call-by-name parameter (a quoted parameter)

Called as a function

Assigned a procedure

Assigned a list

Assigned a set

Assigned a range

Assigned a value as a table or list element

Assigned a function value (assigned a value to remember as a function value)

Severe errors - return code 3

0

"The following statements are not inside

any loop:"

Indicates that a break or next statement has

appeared outside of a loop.

1

"The following statements are not inside

any procedure:"

Indicates that an error or return statement has

appeared outside of a procedure.

2

"These names were declared more than

once as a local variable:"

Indicates that the same local variable has been

declared more than once in a procedure's local

statement.

3

"These names appeared more than once in

the parameter list:"

Indicates that the same parameter has been

declared more than once in a procedure's parameter

list.

4

"These names were declared as both a

local variable and a parameter:"

Indicates that a procedure has a parameter and

local variable with the same name.

5

"Invalid left hand side of assignment:"

Indicates that an invalid expression (e.g. a set,

a sum, etc.) appears on the left hand side of an

assignment.

Serious errors - return code 2

6

"These names were used as the same loop

variable for nested loops:"

Indicates that an inner loop uses the same loop

control variable as an outer loop.

7

"There is unreachable code that will

never be executed:"

Indicates that a statement occurs immediately

after a break, next, return, or error statement.

Such a statement can never be reached during the

course of execution.

8

"These names were used as iteration

control variables for both a $, sum, or

product construct and a loop:"

Indicates that a construct such as seq, add, or $

uses the same control variable as an enclosing

loop.

9

"These names were used as global names

but were not declared:"

Indicates that a procedure makes use of some

global names, but has not declared them as such.

10

"Underscore names are reserved for use

in the library. These global names start

with _:"

Indicates use of a global name beginning with the

underscore ("_") character. Such names are

reserved for use by Maple's supplied library.

11

"These local variables were never used:"

Indicates that the local variables were declared,

but never used within the procedure. Removing the

declarations can marginally improve performance

and reduce memory usage.

12

"These exported variables were never used:"

Indicates that the module exports were declared,

but never used within the module. Removing the

declarations can marginally improve performance

and reduce memory usage.

13

"These local variables were used but

never assigned a value:"

Indicates that a local variable's value was used,

but that no value was ever assigned to it,

suggesting a coding error.

Note that if a variable is intended to be used only

as a symbol in a procedure, and is not to be assigned,

declaring it as type nothing will avoid this error.

14

"These local variables were assigned a

value but otherwise not used:"

Indicates that a value was assigned to a local

variable, but that this variable was then never

used, suggesting a coding error.

15

"These parameters were never used:"

Indicates that the specified parameters of a

procedure were never actually referred to by name

within the procedure.

16

"These names defined in a macro or alias

statement were assigned a value:

Indicates that a value that has a macro expansion

appears on the right hand side of an assignment,

meaning that the object being assigned to is not

what it appears to be.

17

"These parameters were also used as

macro or alias names:"

Indicates that a procedure parameter name

conflicts with a macro or alias name.

18

"These local variables were also used as

macro or alias names:"

Indicates that a procedure's local variable name

conflicts with a macro or alias name.

19

"These macro or alias names were

expanded to a non-name where a name was

needed:"

Indicates that a macro or alias that expands to

something other than a name has appeared in a

context where a name is required.

20

"Possible implied multiplication:"

Indicates that an expression such as 2(x+1) has

been encountered. In Maple, this means "apply the

constant function 2 to the argument x+1", not

"multiply 2 by x+1".

21

"Quotes are not needed around these

names:"

Indicates that a name was written with backquotes

(``) when such quotes were redundant.

22

"These local variables were not declared

explicitly:"

Indicates local variables that were implicitly

declared (Maple declares as local any variables

that are undeclared, and appear on the left hand

side of an assignment or as the control variable

of a loop).

Warnings - return code 1

23

"The following function calls disagree

with number of parameters in the

function definition:"

Indicates that a function was called with the

wrong number of arguments based on the information

given in a library database.

24

"These library names were assigned a

value:"

Indicates that a name appearing in a library

database was assigned to.

25

"These system defined names were

assigned a value:"

26

"These system defined names were

redefined in a macro or alias

statement:"

Indicates that a system-defined name (e.g. Pi) was

assigned to.

27

"These catenated names were used:"

Indicates that the concatenation operator (||) was

used to create a name.

28

"These parameters or local variables are

also system defined names:"

Indicates that a parameter or local variable hides

a system defined name from use inside a procedure.

29

"These names defined in a macro or alias

statement were redefined:"

Indicates that a pre-defined macro or alias has

been redefined.

30

"Control variable of seq, add, or mul

not referenced in body:"

Indicates that the body expression of a seq, add,

or mul call is not a function of the control

variable.

31

"Equations were used as statements on

the following lines:"

Indicates that an equation (e.g. a=b) occurs by

itself as a statement, suggesting that an

assignment (a:=b) might have been intended

instead.

32

"These parameters were never used

explicitly:"

Indicates that a named formal parameter of a

procedure is never actually used within the body

of the procedure.

33

"These global variables were declared,

but never used:"

Indicates that the global variables were declared,

but never used within the procedure.

34

"These local variables were used before

they were assigned a value:"

Indicates that the local variables may have

been used in an expression before they were

initialized.

35

"Ineffectual call to with() inside a proc"

Indicates that the with command was used inside

a procedure.  The with() command binds names within

a package so the package prefix can be omitted.

When called inside a procedure, the bindings don't take

effect until the procedure is finished, so the short

names cannot be used within the procedure itself.

Consider the uses statement instead.