Auto-Spacing between words - Some PDF documents are created such that their internal structure does not demarcate "spaces”� between words, even though the viewable PDF page does contain spaces between words. As such, the Investintech PDF conversion engine automatically adds spaces between document patterns (i.e. words) as a default setting.
In certain cases, such as the case of expanded text with Justify alignment, the Auto-Spacing between words default can result in the insertion of extra spaces between words and poor conversion results. In these cases, conversion results may improve if the Auto-Spacing between words setting is deselected. This option is applicable only for non-scanned documents/pages.
Auto-Spacing between close numbers - This function works similarly to the Auto-Spacing between words function, except it focuses on patters that consist of numbers.
This article refers to Able2Doc, Able2Doc Professional, Able2Extract and Able2Extract Professional.