[Warning] KorselAdm_File.pas[23]: Unsafe type 'Korsel1RecFil' osv

Hej

Slår jeg op i Delphi 7.0's hjælp under "Unsafe type" får jeg følgende:
You have used a data type or operation for which static code analysis cannot prove that it does not overwrite memory. In a secured execution environment such as .NET, such code is assumed to be unsafe and a potential security risk.

Linien er:
  AssignFile(Korsel1RecFil,Korsel1_Filename);
  Korsel1RecFil: File of "Record"
  Korsel1_Filename: Konstant 

Jeg får mange tilsvarende fejlmeldinger i linier med filhåndtering.

Hvad betyder det og hvad skal jeg evt. gøre ?
/PZ