Vowel whose quality does not change over the duration of the vowel is called a monophthong. Monophthongs are sometimes called "pure" or "stable" vowels. A vowel sound that glides from one quality to another is called a diphthong, and a vowel sound that glides successively through three qualities is a triphthong. All languages have monophthongs and many languages have diphthongs, but triphthongs or vowel sounds with even more target qualities are relatively rare cross-linguistically. English has all three types: the vowel sound in "hit" is a monophthong , the vowel sound in "boy" is in most dialects a diphthong , and
Blittable types Blittable types Blittable types are data types in the Microsoft .NET framework that have an identical presentation in memory for both managed and unmanaged code. Understanding the difference between blittable and non-blittable types can aid in using COM Interop or P/Invoke, two techniques for interoperability in .NET applications. A memory copy operation is sometimes referred to as "block transfer", shortened to bit blit (and dedicated hardware to make such a transfer is called a blitter). "Blittable" is a .NET-specific term expressing whether it is legal to copy an object using a block transfer. Interoperability can be bidirectional sharing of data