symbols scilab operator names

## Description

Use the following names to get help on a specific symbol.

operator | name in Scilab help
`',", .'` | quote
`+` | plus
`-` | minus
`*, .*, *.` | star
`.*.` | kron
`.\., ./.` | krondivide
`/, ./, /.` | slash
`//, /* */` | comments
`\, .\ ,\.` | backslash
`.` | dot
`=, ==` | equal
`<,>,>=,<=,<>` | less, greater
`~` | tilde
`[]` | brackets
`()` | parentheses
`%` | percent
`:` | colon
`,` | comma
`;` | semicolon
`^, .^` | hat, power
`|, ||` | or_op
`&, &&` | and_op
`$` | dollar

For historical reasons, different symbols may represent the same operator:

`@` is equivalent to `~`

`**` is equivalent to `^`.

It is highly recommended not to use these features, because they will be removed in the future.

## See also

- overloading
- names
- getscilabkeywords