Georg_
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Perhaps the confusion arose due to the following nuance:
"Appendix to the FIDE Tournament Rules
Rules for the application of additional indicators
Approved by the General Assembly in 1998
1. Accounting for unplayed games
To eliminate the undesirable influence of unplayed games on the distribution of places, these games should be counted as follows:
Regardless of the result of an unplayed game (win in the case where a player receives a point due to being "exempt," win or loss by default, or the game was not played because the player withdrew or was absent for one or more rounds), this result should be considered when determining the additional indicator as a draw for the player against himself."
That is, when calculating the Buchholz score, the program treats technical wins or unplayed games of withdrawn players as draws with oneself. However, it is still unclear where these 0.5 points come from...
