Computer-readable media having computer-executable instructions distinguish the script type of at least one portion of a writing input. A sub-word of a writing line of a handwritten document is identified and is processed to determine the writing style. The writing line is consequently associated with a script type. The script type of a writing line is determined from the script types of the sub-words in the writing line. When the number of sub-words having a first script type is greater than the number of sub-words having a second script type, the script type of the writing line is categorized as the first script type. A script analyzer determines a writing style of at least one sub-word and selects one of a plurality of neural networks to categorize the script type of a writing line.