Back References background errors 2nd background I/O reader background proceses, in C Backslash Quoting backslash sequences 2nd backslash-newline, in quoted string BackSpace key Ball, Steve balloon help baud rate, I/O channel Beasley, David beep [See bell] bell, Tk command bgerror 2nd 3rd Binary Data and File I/O Binary Data, ByteArrays binary data, pack binary data, unpack binary encoding Binary String Support binary, Tcl command bind, Tk command Bind_Display Bind_Edit Bind_Interface Bind_New Bind_Read Bind_Save BindDefine BindDragto binding adding to arrow keys break and continue button modifiers canvas object 2nd canvas text objects class command to event continue destroy window different binding tags double click event syntax event types global in C code keyboard events Meta and Escape mouse events order of execution scale widget scrollbar widget sequence of events tab key tag, defining text tags text widget 2nd Tk 4.0 changes top-level windows user interface for window changes size window dragging BindMark BindSelect bindtags, Tk command BindYview bitmap built-in canvas item definition in C code image type in label on canvas widget attribute Blob and BlobState blob Command Example Blob_Init and BlobCleanup procedures BlobCommand and BlobPoke BlobCreate and BlobDelete BlobData and BlobN BlobNames procedure BlobState data structures BLT bold text 2nd book Web site boolean expressions boolean preference item Borders and padding borders vs. padding, example Borders, 3D borderWidth, widget attribute Borenstein, Nathaniel Bound Quantifiers box on canvas break and continue in bindings break, Tcl command Brouwers, Jean Brower Plugin Compatiblity browse selection mode, listbox browser for the code examples Buffering, I/O Channel Building a List Building Tcl from Source built-in bitmaps bulleted list button associated with a Tcl procedure associated with variables attributes command container for 2nd emulate in text widget fixing a troublesome situation mouse as event modifiers operations padding padding vs. packer padding problems with command row of 2nd scope of command Tk widget user-defined byte code compiler 2nd ByteArrays for Binary Data