<INPUT TYPE="PASSWORD" NAME="name of variable" VALUE="value" SIZE="size" MAXLENGTH="length">
Where INPUT TYPE="PASSWORD" specifies the input to be a text box with text as asterisks.
The NAME is the name of the variable. For example, NAME="secret_code". The user would input a number or a string of characters and that number or string would be the value assigned to the name of the variable "secret_code".
<INPUT TYPE="PASSWORD" NAME="name of variable">
is required syntax for the input. The other attributes are optional.
If the VALUE attribute is specified that value will appear in the text box. This is used to save some typing. The user can override this.
The SIZE attribute denotes the size of the text box. The SIZE is specified in number of characters. The default SIZE varies from browser to browser.
The MAXLENGTH attribute limits the length of the input character string. MAXLENGTH can be greater than SIZE, in which case the text box will scroll, or MAXLENGTH can be less than or equal to SIZE.