**Pattern Name:**
**Introduction:**
**Illustration:**
**CONTEXT:**
**PROBLEM:**
**Forces:**
**THEREFORE (SOLUTION):**
**Actions:**
**Consequences:**
**Known Uses:**
**RELATED PATTERNS:**
**Pattern Name:**
**Introduction:**
**Illustration:**
**CONTEXT:**
**PROBLEM:**
**Forces:**
**THEREFORE (SOLUTION):**
**Actions:**
**Consequences:**
**Known Uses:**
**RELATED PATTERNS:**