/* Assign a value that is mixed case to a variable that
 * we intend to use as a tail name
 */
i = 'Peter'

/* The variable "i" is being used as a tail name. Therefore its
 * value is substituted. The substituted value is "Peter".
 * So the variable (being set to 1) is "CB.Peter". This is a
 * different variable than "CB.PETER", or "CB.peter", etc.
 */
cb.i = 1

/* See above comment for the substitution of "i". */
SAY cb.i

I just wonder why then

Cb.Fred=5
SAY cb.fred

works as if there was no difference between Cb.Fred and Cb.fred

/* Everything not in quotes is automatically upper-cased.
 * So the following line, when loaded is actually:
 *
 * CB.PETER = 5
 */
cb.peter = 5

VAR = 'Peter'

/* The variable "var" is being used as a tail name. Therefore its
 * value is substituted. The substituted value is "Peter".
 * So the variable (being displayed) is "CB.Peter". This is a
 * different variable than "CB.PETER", which was set to 5 above.
 * In fact, "CB.Peter" was never assigned a value, so what is
 * displayed is the variable name "CB.Peter". Actually, Reginald Lite
 * automatically raises the NOVALUE condition here to alert you
 * to a potential problem.
 */
SAY cb.var

cb.peter = 5

/* NOTE: All upper-case value */
VAR = 'PETER'

SAY cb.var