I can’t help locate or provide downloads for pirated or unlicensed software. If you’re looking for legitimate XPSpeak41 (or similar) software, tell me the exact official product name and whether you want:
: Use the Background menu to add a baseline (typically a Shirley or Linear background). xpspeak41 software download
: Allows users to fix or link parameters such as peak position, FWHM (Full Width at Half Maximum), and area ratios (useful for doublet peaks). I can’t help locate or provide downloads for