Historic Sanskrit manuscripts: a religious text (top), and a medical text
The Oxford Introduction to Proto-Indo-European and the Proto-Indo-European World
A 17th-century birch bark manuscript of Pāṇini's grammar treatise from Kashmir
Sanskrit's link to the Prakrit languages and other Indo-European languages

Reinöhl further states that there is a symmetric relationship between Dravidian languages like Kannada or Tamil, with Indo-Aryan languages like Bengali or Hindi, whereas the same relationship is not found for non-Indo-Aryan languages, for example, Persian or English:

Extant manuscripts in Sanskrit number over 30 million, one hundred times those in Greek and Latin combined, constituting the largest cultural heritage that any civilization has produced prior to the invention of the printing press.

Sanskrit language's historical presence has been attested in many countries. The evidence includes manuscript pages and inscriptions discovered in South Asia, Southeast Asia and Central Asia. These have been dated between 300 and 1800 CE.

Regarding the palatal plosives, the pronunciation is a matter of debate. In contemporary attestation, the palatal plosives are a regular series of palatal stops, supported by most Sanskrit sandhi rules. However, the reflexes in descendant languages, as well as a few of the sandhi rules regarding ch, could suggest an affricate pronunciation.

jh was a marginal phoneme in Sanskrit, hence its phonology is more difficult to reconstruct; it was more commonly employed in the Middle Indo-Aryan languages as a result of phonological processes resulting in the phoneme.

A recitation of the Sanskrit composition Guru Stotram, or "the hymn of praise for the teacher (guru)". (4 min 55 s)

Over the centuries, and across countries, a number of scripts have been used to write Sanskrit.

Starting in about the 1st century BCE, Sanskrit has been written in many South Asian, Southeast Asian and Central Asian scripts.

As an Indo-European language, Sanskrit's core lexicon is inherited from Proto-Indo-European. Over time however, the language exhibits a tendency to shed many of these inherited words and borrow others in their place from other sources.

The sources of these new loanwords are many, and vary across the different regions of the Indian subcontinent. But of all influences on the lexicon of Sanskrit, the most important is Dravidian.

While Vedic and epic form of speech is largely cognate to that of other Indo-European languages such as Greek and Latin, later Sanskrit shows a tendency to move away from using verbal forms to nominal ones. Examples of nominal forms taking the place of conventional conjugation are:

Sanskrit has had a historical presence and influence in many parts of Asia. Above (top clockwise): [i] a Sanskrit manuscript from Turkestan, [ii] another from Miran-China.
[i] a bell with Sanskrit engravings in South Korea [ii] the Kūkai calligraphy of Siddham-Sanskrit in Japan