Initializing help system before first use

# problem.getPresolveMap

Purpose
Returns the mapping of the row and column numbers from the presolve problem back to the original problem.
Topic areas
Problem Information, Presolve, Optimizer
Synopsis
`rowmap, colmap = problem.getPresolveMap()`
Return value

rowmap: list[int] | Integer array of length ROWS containing the row maps.
colmap: list[int] | Integer array of length COLS containing the column maps.

Further information
1. This function applies to linear and convex quadratic (including second order conic) problems only.
2. The presolved problem can contain rows or columns that do not map to anything in the original problem. An example of this are cuts created during the MIP solve and temporarily added to the presolved problem. It is also possible that the presolver will introduce new rows or columns. For any row or column that does not have a mapping to a row or column in the original problem, the corresponding entry in the returned rowmap and colmap arrays will be -1.
Related topics
the Optimizer Reference Manual.
Parent Topic Xpress problem object methods

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