copybook

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blot (one's) copy book

To tarnish, damage, or ruin one's reputation by behaving badly or committing some mistake or social transgression. Refers to a child's copy book, the blotting (staining with ink) of which ruins one's work. Primarily heard in UK. The local councilor blotted his copy book when it came to light that he had accepted bribes to allow unregulated development projects to go ahead. I really blotted my copy book when I spilled my drink on the visiting dignitary last night.
See also: blot, book, copy

blot your copybook

BRITISH
If you blot your copybook, you damage your reputation by doing something wrong. Their relationship had been so perfect. Until he'd blotted his copybook with Susan, that is. Note: You can also say that there is a blot on your copybook. In fact, just about the only blot on his copybook so far was a missed penalty against Arsenal 10 days ago. Note: In the past, schoolchildren had `copybooks'. These were books of examples of handwriting, with spaces for the children to copy it.
See also: blot, copybook

blot your copybook

tarnish your good reputation. British
A copybook was an exercise book with examples of handwriting for children to copy as they practised their own writing.
See also: blot, copybook

blot your ˈcopybook

(old-fashioned, informal) spoil a previously good record: He paid back the money he had stolen, but he had blotted his copybook and couldn’t hope for promotion.A copybook was an exercise book with printed examples of good writing for children to copy. If you blotted it, you accidentally spoiled it by making a mark with ink on it.
See also: blot, copybook
References in periodicals archive ?
Linkage-Section - allows entry of up to eight (8) linkage section copybooks and will expand uploaded copybooks for Linkage-Section.
In addition to client source code, Jacada Studio for iSeries also generates RPG or COBOL copybooks that define the client data exchange buffers as iSeries Special Files, along with complete RPG or COBOL shell programs with the Special File definitions and basic presentation I/O already built in.
Templates will be automatically generated from COBOL copybooks, facilitating deployment and eliminating the need for handcrafted templates.
An intelligent access server that understands the complex data structures found in VSAM and IMS and eliminates the need for developing COBOL extract programs; automatic interpretation of metadata found in COBOL copybooks and IMS DBD files that supports easy mapping of arrays to the relational model; data visualization capabilities that allow the browsing and manipulation of any mainframe data source, regardless of it's internal complexity; an ETL case study showing data cleansing techniques for mainframe customer information; and rapid deployment strategies that get systems up and running in days rather than weeks or months.
Meta data importers that directly generate interface definitions from XML data type definitions (DTDs), COBOL Copybooks, and data structures for SAP, PeopleSoft, Oracle and others.
After documenting all statements marked for changes either online or via printed reports, the user has the option to perform updates manually or allow the tool to automatically modify programs and copybooks so that these name and address fields expand from 25 positions to 40 positions.
0 also includes more sophisticated support for record mapping used in determining the offsets for fields defined in COBOL and PL/1 copybooks.
CSI has developed the proprietary "VISION 2000(SM)" service, which provides an accurate, controlled, and verifiable solution for all COBOL, PL/1 and RPG main programs, subprograms, copybooks, JCL, database definitions and other software components requiring change to accommodate year 2000 dates.
CSI) has developed the proprietary "VISION 2000(SM)" service which provides an accurate, controlled, and verifiable solution for all COBOL and PL/1 main programs, subprograms, copybooks, JCL, database definitions and other software components requiring change to accommodate the year 2000 dates.