# 1. Goal
Show the treatment fee of each animal in an ALV list. The practice manager uses
the list to compare the animals for a period.

# 2. Open questions
None.

# 3. Context
- The table {{P}}TREAT exists in package $TMP. It contains data.
  Fields: TREAT_ID (INT4, key), TREAT_DATE (DATS), ANIMAL (CHAR 10),
  FEE (DEC 15,2).
- The practice writes one row for each treatment.

# 4. Contract
- Create the executable program {{P}}VET_SUM in package $TMP.
- Selection screen:
  - Parameter P_FROM, type DATS, mandatory: the first treatment date to include.
  - Select-option S_ANIM for the animal.
- Show the result with CL_SALV_TABLE. The output table has these columns with
  these names:
  - ANIMAL: the animal.
  - TOTAL: the sum of the fees.
  - CNT: the number of the treatments.
  - FREQUENT: 'X' if CNT is 3 or more, otherwise empty.

# 5. Business rules
1. Include a treatment only if TREAT_DATE is on or after P_FROM and ANIMAL is
   in S_ANIM.
2. Show one line for each animal that has at least one included treatment.
3. TOTAL is the sum of the FEE of the included treatments of the animal.
4. CNT is the number of the included treatments of the animal.
5. FREQUENT is 'X' if CNT is 3 or more. Otherwise FREQUENT is empty.
6. Sort the lines by TOTAL, the highest total first.

# 6. Constraints
- Release target: 7.02. Use only ABAP syntax that release 7.02 supports. Do not
  use inline declarations, constructor expressions, string templates, table
  expressions, the NEW operator, or the character '@' in ABAP SQL.
- Coding standards: Clean ABAP. Read the table with one database access.
- Out of scope: do not change the table {{P}}TREAT.

# 7. Acceptance
- The program is active and has no syntax error.
- The hidden tests pass.
- Write ABAP Unit tests as local test classes in the program.