# Roadmap

## Phase 2: integer phase two

**Goal:** the integer parent.
**Requirements:** [R2]

## Phase 2.1: decimal child of phase two

**Goal:** decimal subphase. Must not be returned when caller asks for phase 2.
**Requirements:** [R2.1]

## Phase 2.10: decimal phase 2.10

**Goal:** prefix-collision guard — "2.10" must NOT be matched by a "2.1" lookup.
**Requirements:** [R2.10]

## Phase 21: phase twenty-one

**Goal:** prefix-collision guard — "21" must NOT be matched by a "2" lookup.
**Requirements:** [R21]