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    Nuklear
    
   This is a minimal-state, immediate-mode graphical user interface toolkit written in ANSI C and licensed under public domain. It was designed as a simple embeddable user interface for application and does not have any dependencies, a default render backend or OS window/input handling but instead provides a highly modular, library-based approach, with simple input state for input and draw commands describing primitive shapes as output. So instead of providing a layered library that tries to abstract over a number of platform and render backends, it focuses only on the actual UI. 
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Data Fields | |
| struct nk_buffer_marker | marker [NK_BUFFER_MAX] | 
| struct nk_allocator | pool | 
| !< buffer marker to free a buffer to a certain offset  | |
| enum nk_allocation_type | type | 
| !< allocator callback for dynamic buffers  | |
| struct nk_memory | memory | 
| !< memory management type  | |
| float | grow_factor | 
| !< memory and size of the current memory block  | |
| nk_size | allocated | 
| !< growing factor for dynamic memory management  | |
| nk_size | needed | 
| !< total amount of memory allocated  | |
| nk_size | calls | 
| !< totally consumed memory given that enough memory is present  | |
| nk_size | size | 
| !< number of allocation calls  | |