Pomodoro Timer for C/S/E

Description

POMODORO is a Pomodoro Technique Timer for TI-84 Plus CE, CSE, and TI-83 Premium CE

The Pomodoro timer breaks time up into Focus and Short Break sessions, with the occasional Long Break.

By default, POMODORO cycle has 4 Focus sessions of 24 minutes each, with 6-minute Short Breaks in between. After 4 Focus sessions, a 15-minute Long Break is due, then the cycle starts again.

In the main Timer Screen, the time remaining in the current session ticks down. When less than 10 seconds remain, the screen flashes to alert to the changing session.
The session tracker near the bottom of the screen points to the current session, indicating (F)ocus, (S)hort Break, and (L)ong Break.

In the Edit Screen, the duration and type of each session can be edited, along with the number of sessions in the cycle. The cycle's session duration and type data is persistent, stored in custom list PMDR (must remain in RAM).

This is written entirely in TI-BASIC on-calculator. It does not require any shell or external libs.
A DCSE icon depicting a tomato kitchen timer is included in the program header.

USES:
Variables: A,B,C,D,E,F,G
Lists: L1, L2, L3, PMDR