LT provides a great tool for searching DWG files for content like BLOCKS, DIMSTYLES, DRAWINGS, HATCH PATTERNS, LAYERS, LAYOUTS, LINETYPES, TEXTSTYLES etc.
Start Design Center (ADCENTER command or CTRL+2), click on the Search button, and use the new pop-up to select what you are looking for plus other search parameters to find your content quickly.
ADCENTER command can also be used to identify where a drawing file is being Xrefed.
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