Thank you for your question. For each item in a BED file, the program reports the highest and lowest scores that were found in the boundaries of the BED item. However, if you are looking for maxima from overlapping tiles, if this is what you mean by "the maximum found of every 10 bp tile within this region", then you can use the -samplAroundCenter option. The sampleAroundCenter=N option takes a sample of N bases around the center of each BED item. To do this, your BED file should contain one entry for each position like so:
chr17 1 2
chr17 2 3
chr17 3 4
chr17 4 5
Use -sampleAroundCenter=10. Note, it is integer arithmetic, so fractions are truncated (4.5 is turned into 4).
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Luvina Guruvadoo
UCSC Genome Bioinformatics Group